251064097 has 4 divisors (see below), whose sum is σ = 251229616. Its totient is φ = 250898580.

The previous prime is 251064091. The next prime is 251064103. The reversal of 251064097 is 790460152.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (251064091) and next prime (251064103).

It is a cyclic number.

It is not a de Polignac number, because 251064097 - 2²⁷ = 116846369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (251064091) 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, 80463 + ... + 83524.

It is an arithmetic number, because the mean of its divisors is an integer number (62807404).

Almost surely, 2^251064097 is an apocalyptic number.

It is an amenable number.

251064097 is a deficient number, since it is larger than the sum of its proper divisors (165519).

251064097 is a wasteful number, since it uses less digits than its factorization.

251064097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 165518.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 251064097 is about 15845.0022720099. The cubic root of 251064097 is about 630.8530453113.

The spelling of 251064097 in words is "two hundred fifty-one million, sixty-four thousand, ninety-seven".