51572775 has 12 divisors (see below), whose sum is σ = 85267112. Its totient is φ = 27505440.

The previous prime is 51572761. The next prime is 51572789. The reversal of 51572775 is 57727515.

It is an interprime number because it is at equal distance from previous prime (51572761) and next prime (51572789).

It is not a de Polignac number, because 51572775 - 2⁵ = 51572743 is a prime.

It is a super-2 number, since 2×51572775² = 5319502242401250, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 343744 + ... + 343893.

Almost surely, 2^51572775 is an apocalyptic number.

51572775 is a deficient number, since it is larger than the sum of its proper divisors (33694337).

51572775 is a wasteful number, since it uses less digits than its factorization.

51572775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 687650 (or 687645 counting only the distinct ones).

The product of its digits is 85750, while the sum is 39.

The square root of 51572775 is about 7181.4187316992. The cubic root of 51572775 is about 372.2261097917.

The spelling of 51572775 in words is "fifty-one million, five hundred seventy-two thousand, seven hundred seventy-five".