88057021 has 16 divisors (see below), whose sum is σ = 98904960. Its totient is φ = 77837760.

The previous prime is 88057007. The next prime is 88057027. The reversal of 88057021 is 12075088.

88057021 = 754² + 755² + ... + 884².

It is not a de Polignac number, because 88057021 - 2⁵ = 88056989 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (88057027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48496 + ... + 50278.

It is an arithmetic number, because the mean of its divisors is an integer number (6181560).

Almost surely, 2^88057021 is an apocalyptic number.

It is an amenable number.

88057021 is a deficient number, since it is larger than the sum of its proper divisors (10847939).

88057021 is a wasteful number, since it uses less digits than its factorization.

88057021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1956.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 88057021 is about 9383.8702569889. The cubic root of 88057021 is about 444.8920682565.

The spelling of 88057021 in words is "eighty-eight million, fifty-seven thousand, twenty-one".