20554974 has 24 divisors (see below), whose sum is σ = 48584952. Its totient is φ = 6228720.

The previous prime is 20554973. The next prime is 20554991. The reversal of 20554974 is 47945502.

It is a super-2 number, since 2×20554974² = 845013912281352, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20554973) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 51709 + ... + 52104.

It is an arithmetic number, because the mean of its divisors is an integer number (2024373).

Almost surely, 2^20554974 is an apocalyptic number.

20554974 is an abundant number, since it is smaller than the sum of its proper divisors (28029978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20554974 is a wasteful number, since it uses less digits than its factorization.

20554974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103832 (or 103829 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 20554974 is about 4533.7593672360. The cubic root of 20554974 is about 273.9296087849.

It can be divided in two parts, 20554 and 974, that added together give a triangular number (21528 = T₂₀₇).

The spelling of 20554974 in words is "twenty million, five hundred fifty-four thousand, nine hundred seventy-four".