51256806 has 32 divisors (see below), whose sum is σ = 105840000. Its totient is φ = 16537920.

The previous prime is 51256789. The next prime is 51256823. The reversal of 51256806 is 60865215.

It is an interprime number because it is at equal distance from previous prime (51256789) and next prime (51256823).

It is a super-2 number, since 2×51256806² = 5254520322643272, which contains 22 as substring.

It is a Curzon number.

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, 33445 + ... + 34943.

It is an arithmetic number, because the mean of its divisors is an integer number (3307500).

Almost surely, 2^51256806 is an apocalyptic number.

51256806 is an abundant number, since it is smaller than the sum of its proper divisors (54583194).

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

51256806 is a wasteful number, since it uses less digits than its factorization.

51256806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 51256806 is about 7159.3858675169. The cubic root of 51256806 is about 371.4643841068.

The spelling of 51256806 in words is "fifty-one million, two hundred fifty-six thousand, eight hundred six".