51406328 has 32 divisors (see below), whose sum is σ = 102049200. Its totient is φ = 24235008.

The previous prime is 51406319. The next prime is 51406337. The reversal of 51406328 is 82360415.

It is an interprime number because it is at equal distance from previous prime (51406319) and next prime (51406337).

It is a super-2 number, since 2×51406328² = 5285221116887168, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a self number, because there is not a number n which added to its sum of digits gives 51406328.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7400 + ... + 12552.

Almost surely, 2^51406328 is an apocalyptic number.

51406328 is a gapful number since it is divisible by the number (58) formed by its first and last digit.

It is an amenable number.

51406328 is a deficient number, since it is larger than the sum of its proper divisors (50642872).

51406328 is a wasteful number, since it uses less digits than its factorization.

51406328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5231 (or 5227 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 51406328 is about 7169.8206393187. The cubic root of 51406328 is about 371.8252349008.

The spelling of 51406328 in words is "fifty-one million, four hundred six thousand, three hundred twenty-eight".