51070656 has 224 divisors, whose sum is σ = 172963840. Its totient is φ = 12939264.

The previous prime is 51070639. The next prime is 51070667. The reversal of 51070656 is 65607015.

It is a tau number, because it is divible by the number of its divisors (224).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 646425 + ... + 646503.

It is an arithmetic number, because the mean of its divisors is an integer number (772160).

Almost surely, 2^51070656 is an apocalyptic number.

51070656 is a gapful number since it is divisible by the number (56) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51070656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86481920).

51070656 is an abundant number, since it is smaller than the sum of its proper divisors (121893184).

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

51070656 is a wasteful number, since it uses less digits than its factorization.

51070656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151 (or 141 counting only the distinct ones).

The product of its (nonzero) digits is 6300, while the sum is 30.

The square root of 51070656 is about 7146.3736258329. The cubic root of 51070656 is about 371.0141546414.

The spelling of 51070656 in words is "fifty-one million, seventy thousand, six hundred fifty-six".