51097465 has 4 divisors (see below), whose sum is σ = 61316964. Its totient is φ = 40877968.

The previous prime is 51097381. The next prime is 51097471. The reversal of 51097465 is 56479015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9585216 + 41512249 = 3096^2 + 6443^2 .

It is a cyclic number.

It is not a de Polignac number, because 51097465 - 2⁹ = 51096953 is a prime.

It is a super-2 number, since 2×51097465² = 5221901858852450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5109742 + ... + 5109751.

It is an arithmetic number, because the mean of its divisors is an integer number (15329241).

Almost surely, 2^51097465 is an apocalyptic number.

It is an amenable number.

51097465 is a deficient number, since it is larger than the sum of its proper divisors (10219499).

51097465 is a wasteful number, since it uses less digits than its factorization.

51097465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10219498.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 51097465 is about 7148.2490863148. The cubic root of 51097465 is about 371.0790632688.

The spelling of 51097465 in words is "fifty-one million, ninety-seven thousand, four hundred sixty-five".