51634388 has 48 divisors (see below), whose sum is σ = 102246144. Its totient is φ = 22654080.

The previous prime is 51634339. The next prime is 51634391. The reversal of 51634388 is 88343615.

It is a super-2 number, since 2×51634388² = 5332220048269088, 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 15 ways as a sum of consecutive naturals, for example, 90143 + ... + 90713.

It is an arithmetic number, because the mean of its divisors is an integer number (2130128).

Almost surely, 2^51634388 is an apocalyptic number.

It is an amenable number.

51634388 is a deficient number, since it is larger than the sum of its proper divisors (50611756).

51634388 is a wasteful number, since it uses less digits than its factorization.

51634388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672 (or 670 counting only the distinct ones).

The product of its digits is 69120, while the sum is 38.

The square root of 51634388 is about 7185.7072024958. The cubic root of 51634388 is about 372.3742812538.

The spelling of 51634388 in words is "fifty-one million, six hundred thirty-four thousand, three hundred eighty-eight".