20314557 has 24 divisors (see below), whose sum is σ = 31187520. Its totient is φ = 13206240.

The previous prime is 20314549. The next prime is 20314559. The reversal of 20314557 is 75541302.

It is a happy number.

20314557 is a `hidden beast` number, since 203 + 1 + 455 + 7 = 666.

It is not a de Polignac number, because 20314557 - 2³ = 20314549 is a prime.

It is a super-2 number, since 2×20314557² = 825362452212498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 20314557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20314559) 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 23 ways as a sum of consecutive naturals, for example, 8944 + ... + 10982.

It is an arithmetic number, because the mean of its divisors is an integer number (1299480).

Almost surely, 2^20314557 is an apocalyptic number.

20314557 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20314557 is a deficient number, since it is larger than the sum of its proper divisors (10872963).

20314557 is an equidigital number, since it uses as much as digits as its factorization.

20314557 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095 (or 2083 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 20314557 is about 4507.1672922136. The cubic root of 20314557 is about 272.8574306909.

Adding to 20314557 its reverse (75541302), we get a palindrome (95855859).

The spelling of 20314557 in words is "twenty million, three hundred fourteen thousand, five hundred fifty-seven".