2154102257 has 8 divisors (see below), whose sum is σ = 2268171360. Its totient is φ = 2040102720.

The previous prime is 2154102217. The next prime is 2154102287. The reversal of 2154102257 is 7522014512.

It is a happy number.

2154102257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2154102257 - 2¹⁸ = 2153840113 is a prime.

It is a super-2 number, since 2×2154102257² = 9280313067224988098, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154102217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53657 + ... + 84777.

It is an arithmetic number, because the mean of its divisors is an integer number (283521420).

Almost surely, 2^2154102257 is an apocalyptic number.

It is an amenable number.

2154102257 is a deficient number, since it is larger than the sum of its proper divisors (114069103).

2154102257 is a wasteful number, since it uses less digits than its factorization.

2154102257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34783.

The product of its (nonzero) digits is 5600, while the sum is 29.

The square root of 2154102257 is about 46412.3071716975. The cubic root of 2154102257 is about 1291.4832321422.

Adding to 2154102257 its reverse (7522014512), we get a palindrome (9676116769).

The spelling of 2154102257 in words is "two billion, one hundred fifty-four million, one hundred two thousand, two hundred fifty-seven".