50821656 has 64 divisors (see below), whose sum is σ = 136080000. Its totient is φ = 15768576.

The previous prime is 50821649. The next prime is 50821663. The reversal of 50821656 is 65612805.

It is an interprime number because it is at equal distance from previous prime (50821649) and next prime (50821663).

It is a super-4 number, since 4×50821656⁴ (a number of 32 digits) contains 4444 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, 25960 + ... + 27848.

It is an arithmetic number, because the mean of its divisors is an integer number (2126250).

Almost surely, 2^50821656 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 50821656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68040000).

50821656 is an abundant number, since it is smaller than the sum of its proper divisors (85258344).

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

50821656 is a wasteful number, since it uses less digits than its factorization.

50821656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1976 (or 1972 counting only the distinct ones).

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

The square root of 50821656 is about 7128.9309156423. The cubic root of 50821656 is about 370.4102000435.

The spelling of 50821656 in words is "fifty million, eight hundred twenty-one thousand, six hundred fifty-six".