2151086 has 8 divisors (see below), whose sum is σ = 3687600. Its totient is φ = 921888.

The previous prime is 2151073. The next prime is 2151089. The reversal of 2151086 is 6801512.

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

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2151089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76811 + ... + 76838.

It is an arithmetic number, because the mean of its divisors is an integer number (460950).

2^2151086 is an apocalyptic number.

2151086 is a deficient number, since it is larger than the sum of its proper divisors (1536514).

2151086 is a wasteful number, since it uses less digits than its factorization.

2151086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153658.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 2151086 is about 1466.6581060356. The cubic root of 2151086 is about 129.0880155706.

Adding to 2151086 its reverse (6801512), we get a palindrome (8952598).

The spelling of 2151086 in words is "two million, one hundred fifty-one thousand, eighty-six".