20077157 has 8 divisors (see below), whose sum is σ = 20387136. Its totient is φ = 19769472.

The previous prime is 20077151. The next prime is 20077163. The reversal of 20077157 is 75177002.

It is an interprime number because it is at equal distance from previous prime (20077151) and next prime (20077163).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20077157 - 2²⁴ = 3299941 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 (20077151) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25118 + ... + 25904.

It is an arithmetic number, because the mean of its divisors is an integer number (2548392).

Almost surely, 2^20077157 is an apocalyptic number.

It is an amenable number.

20077157 is a deficient number, since it is larger than the sum of its proper divisors (309979).

20077157 is an equidigital number, since it uses as much as digits as its factorization.

20077157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1147.

The product of its (nonzero) digits is 3430, while the sum is 29.

The square root of 20077157 is about 4480.7540660027. The cubic root of 20077157 is about 271.7903742781.

The spelling of 20077157 in words is "twenty million, seventy-seven thousand, one hundred fifty-seven".