51415595 has 32 divisors (see below), whose sum is σ = 77898240. Its totient is φ = 31645440.

The previous prime is 51415591. The next prime is 51415597. The reversal of 51415595 is 59551415.

It is not a de Polignac number, because 51415595 - 2² = 51415591 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (51415591) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 31151 + ... + 32759.

It is an arithmetic number, because the mean of its divisors is an integer number (2434320).

Almost surely, 2^51415595 is an apocalyptic number.

51415595 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

51415595 is a deficient number, since it is larger than the sum of its proper divisors (26482645).

51415595 is a wasteful number, since it uses less digits than its factorization.

51415595 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1715.

The product of its digits is 22500, while the sum is 35.

The square root of 51415595 is about 7170.4668606723. The cubic root of 51415595 is about 371.8475764915.

The spelling of 51415595 in words is "fifty-one million, four hundred fifteen thousand, five hundred ninety-five".