51013375 has 32 divisors (see below), whose sum is σ = 73397376. Its totient is φ = 34675200.

The previous prime is 51013357. The next prime is 51013393. The reversal of 51013375 is 57331015.

It is an interprime number because it is at equal distance from previous prime (51013357) and next prime (51013393).

It is not a de Polignac number, because 51013375 - 2²⁵ = 17458943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151207 + ... + 151543.

It is an arithmetic number, because the mean of its divisors is an integer number (2293668).

Almost surely, 2^51013375 is an apocalyptic number.

51013375 is a deficient number, since it is larger than the sum of its proper divisors (22384001).

51013375 is a wasteful number, since it uses less digits than its factorization.

51013375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 1575, while the sum is 25.

The square root of 51013375 is about 7142.3648044608. The cubic root of 51013375 is about 370.8753925559.

The spelling of 51013375 in words is "fifty-one million, thirteen thousand, three hundred seventy-five".