623297251 has 4 divisors (see below), whose sum is σ = 623348104. Its totient is φ = 623246400.

The previous prime is 623297243. The next prime is 623297291. The reversal of 623297251 is 152792326.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 623297251 - 2³ = 623297243 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 623297251.

It is not an unprimeable number, because it can be changed into a prime (623297291) 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, 5491 + ... + 35731.

It is an arithmetic number, because the mean of its divisors is an integer number (155837026).

Almost surely, 2^623297251 is an apocalyptic number.

623297251 is a deficient number, since it is larger than the sum of its proper divisors (50853).

623297251 is a wasteful number, since it uses less digits than its factorization.

623297251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50852.

The product of its digits is 45360, while the sum is 37.

The square root of 623297251 is about 24965.9217935169. The cubic root of 623297251 is about 854.2108245340.

The spelling of 623297251 in words is "six hundred twenty-three million, two hundred ninety-seven thousand, two hundred fifty-one".