20357055 has 32 divisors (see below), whose sum is σ = 36573120. Its totient is φ = 10742400.

The previous prime is 20357027. The next prime is 20357081. The reversal of 20357055 is 55075302.

It is not a de Polignac number, because 20357055 - 2⁶ = 20356991 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12889 + ... + 14381.

It is an arithmetic number, because the mean of its divisors is an integer number (1142910).

Almost surely, 2^20357055 is an apocalyptic number.

20357055 is a deficient number, since it is larger than the sum of its proper divisors (16216065).

20357055 is a wasteful number, since it uses less digits than its factorization.

20357055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1608 (or 1602 counting only the distinct ones).

The product of its (nonzero) digits is 5250, while the sum is 27.

The square root of 20357055 is about 4511.8793201946. The cubic root of 20357055 is about 273.0475705051.

The spelling of 20357055 in words is "twenty million, three hundred fifty-seven thousand, fifty-five".