51164465 has 16 divisors (see below), whose sum is σ = 67366080. Its totient is φ = 36995520.

The previous prime is 51164461. The next prime is 51164471. The reversal of 51164465 is 56446115.

It is not a de Polignac number, because 51164465 - 2² = 51164461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51164461) 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, 7247 + ... + 12443.

It is an arithmetic number, because the mean of its divisors is an integer number (4210380).

Almost surely, 2^51164465 is an apocalyptic number.

51164465 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

51164465 is a deficient number, since it is larger than the sum of its proper divisors (16201615).

51164465 is a wasteful number, since it uses less digits than its factorization.

51164465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5392.

The product of its digits is 14400, while the sum is 32.

The square root of 51164465 is about 7152.9340133962. The cubic root of 51164465 is about 371.2411811514.

The spelling of 51164465 in words is "fifty-one million, one hundred sixty-four thousand, four hundred sixty-five".