20057351 has 2 divisors, whose sum is σ = 20057352. Its totient is φ = 20057350.

The previous prime is 20057347. The next prime is 20057363. The reversal of 20057351 is 15375002.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20057351 - 2² = 20057347 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20057371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10028675 + 10028676.

It is an arithmetic number, because the mean of its divisors is an integer number (10028676).

Almost surely, 2^20057351 is an apocalyptic number.

20057351 is a deficient number, since it is larger than the sum of its proper divisors (1).

20057351 is an equidigital number, since it uses as much as digits as its factorization.

20057351 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1050, while the sum is 23.

The square root of 20057351 is about 4478.5434015983. The cubic root of 20057351 is about 271.7009716592.

The spelling of 20057351 in words is "twenty million, fifty-seven thousand, three hundred fifty-one".