51662580 has 24 divisors (see below), whose sum is σ = 144655392. Its totient is φ = 13776672.

The previous prime is 51662579. The next prime is 51662587. The reversal of 51662580 is 8526615.

51662580 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51662587) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 430462 + ... + 430581.

It is an arithmetic number, because the mean of its divisors is an integer number (6027308).

Almost surely, 2^51662580 is an apocalyptic number.

It is an amenable number.

51662580 is an abundant number, since it is smaller than the sum of its proper divisors (92992812).

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

51662580 is a wasteful number, since it uses less digits than its factorization.

51662580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 861055 (or 861053 counting only the distinct ones).

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

The square root of 51662580 is about 7187.6686067180. The cubic root of 51662580 is about 372.4420401390.

The spelling of 51662580 in words is "fifty-one million, six hundred sixty-two thousand, five hundred eighty".