10057021 has 6 divisors (see below), whose sum is σ = 10890330. Its totient is φ = 9283248.

The previous prime is 10056973. The next prime is 10057031. The reversal of 10057021 is 12075001.

It can be written as a sum of positive squares in 3 ways, for example, as 784996 + 9272025 = 886^2 + 3045^2 .

It is not a de Polignac number, because 10057021 - 2⁹ = 10056509 is a prime.

It is a super-2 number, since 2×10057021² = 202287342788882, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10056986 and 10057004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10057031) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 29586 + ... + 29923.

It is an arithmetic number, because the mean of its divisors is an integer number (1815055).

Almost surely, 2^10057021 is an apocalyptic number.

It is an amenable number.

10057021 is a deficient number, since it is larger than the sum of its proper divisors (833309).

10057021 is an equidigital number, since it uses as much as digits as its factorization.

10057021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59535 (or 59522 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 10057021 is about 3171.2806561388. The cubic root of 10057021 is about 215.8521865369.

It can be divided in two parts, 100 and 57021, that added together give a square (57121 = 239²).

The spelling of 10057021 in words is "ten million, fifty-seven thousand, twenty-one".