51536502 has 12 divisors (see below), whose sum is σ = 111662460. Its totient is φ = 17178828.

The previous prime is 51536483. The next prime is 51536533. The reversal of 51536502 is 20563515.

51536502 is a `hidden beast` number, since 5 + 1 + 5 + 3 + 650 + 2 = 666.

It is a super-2 number, since 2×51536502² = 5312022076792008, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1431552 + ... + 1431587.

It is an arithmetic number, because the mean of its divisors is an integer number (9305205).

Almost surely, 2^51536502 is an apocalyptic number.

51536502 is an abundant number, since it is smaller than the sum of its proper divisors (60125958).

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

51536502 is a wasteful number, since it uses less digits than its factorization.

51536502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2863147 (or 2863144 counting only the distinct ones).

The product of its (nonzero) digits is 4500, while the sum is 27.

The square root of 51536502 is about 7178.8928115692. The cubic root of 51536502 is about 372.1388226242.

The spelling of 51536502 in words is "fifty-one million, five hundred thirty-six thousand, five hundred two".