51532656 has 40 divisors (see below), whose sum is σ = 152145024. Its totient is φ = 14723520.

The previous prime is 51532643. The next prime is 51532669. The reversal of 51532656 is 65623515.

It is an interprime number because it is at equal distance from previous prime (51532643) and next prime (51532669).

It is a super-2 number, since 2×51532656² = 5311229268828672, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76350 + ... + 77021.

Almost surely, 2^51532656 is an apocalyptic number.

51532656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

51532656 is an abundant number, since it is smaller than the sum of its proper divisors (100612368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51532656 is a wasteful number, since it uses less digits than its factorization.

51532656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153389 (or 153383 counting only the distinct ones).

The product of its digits is 27000, while the sum is 33.

The square root of 51532656 is about 7178.6249379669. The cubic root of 51532656 is about 372.1295652276.

The spelling of 51532656 in words is "fifty-one million, five hundred thirty-two thousand, six hundred fifty-six".