2159451 has 24 divisors (see below), whose sum is σ = 3604224. Its totient is φ = 1220400.

The previous prime is 2159449. The next prime is 2159453. The reversal of 2159451 is 1549512.

2159451 is a `hidden beast` number, since 21 + 594 + 51 = 666.

It is an interprime number because it is at equal distance from previous prime (2159449) and next prime (2159453).

It is not a de Polignac number, because 2159451 - 2¹ = 2159449 is a prime.

2159451 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (2159453) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9400 + ... + 9626.

It is an arithmetic number, because the mean of its divisors is an integer number (150176).

2^2159451 is an apocalyptic number.

2159451 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2159451 is a deficient number, since it is larger than the sum of its proper divisors (1444773).

2159451 is a wasteful number, since it uses less digits than its factorization.

2159451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391 (or 388 counting only the distinct ones).

The product of its digits is 1800, while the sum is 27.

The square root of 2159451 is about 1469.5070602076. The cubic root of 2159451 is about 129.2551287643.

The spelling of 2159451 in words is "two million, one hundred fifty-nine thousand, four hundred fifty-one".