51040297 has 16 divisors (see below), whose sum is σ = 63891072. Its totient is φ = 39611520.

The previous prime is 51040271. The next prime is 51040321. The reversal of 51040297 is 79204015.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 51040297 - 2⁷ = 51040169 is a prime.

It is a super-2 number, since 2×51040297² = 5210223835696418, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51040217) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20133 + ... + 22525.

It is an arithmetic number, because the mean of its divisors is an integer number (3993192).

Almost surely, 2^51040297 is an apocalyptic number.

It is an amenable number.

51040297 is a deficient number, since it is larger than the sum of its proper divisors (12850775).

51040297 is a wasteful number, since it uses less digits than its factorization.

51040297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2688.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 51040297 is about 7144.2492257759. The cubic root of 51040297 is about 370.9406234970.

The spelling of 51040297 in words is "fifty-one million, forty thousand, two hundred ninety-seven".