51876220 has 48 divisors (see below), whose sum is σ = 122074848. Its totient is φ = 18351360.

The previous prime is 51876211. The next prime is 51876269. The reversal of 51876220 is 2267815.

It is a super-2 number, since 2×51876220² = 5382284402976800, 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, 4954 + ... + 11326.

It is an arithmetic number, because the mean of its divisors is an integer number (2543226).

Almost surely, 2^51876220 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 51876220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61037424).

51876220 is an abundant number, since it is smaller than the sum of its proper divisors (70198628).

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

51876220 is a wasteful number, since it uses less digits than its factorization.

51876220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6430 (or 6428 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 51876220 is about 7202.5148385824. The cubic root of 51876220 is about 372.9547199741.

The spelling of 51876220 in words is "fifty-one million, eight hundred seventy-six thousand, two hundred twenty".