55820074 has 8 divisors (see below), whose sum is σ = 84559428. Its totient is φ = 27633600.

The previous prime is 55820071. The next prime is 55820101. The reversal of 55820074 is 47002855.

It can be written as a sum of positive squares in 2 ways, for example, as 55577025 + 243049 = 7455^2 + 493^2 .

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

It is a super-2 number, since 2×55820074² = 6231761322730952, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55820071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137967 + ... + 138370.

Almost surely, 2^55820074 is an apocalyptic number.

55820074 is a deficient number, since it is larger than the sum of its proper divisors (28739354).

55820074 is a wasteful number, since it uses less digits than its factorization.

55820074 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 276440.

The product of its (nonzero) digits is 11200, while the sum is 31.

The square root of 55820074 is about 7471.2832900379. The cubic root of 55820074 is about 382.1760516324.

The spelling of 55820074 in words is "fifty-five million, eight hundred twenty thousand, seventy-four".