55790427 has 16 divisors (see below), whose sum is σ = 92742912. Its totient is φ = 28981920.

The previous prime is 55790419. The next prime is 55790437. The reversal of 55790427 is 72409755.

It is not a de Polignac number, because 55790427 - 2³ = 55790419 is a prime.

It is a super-2 number, since 2×55790427² = 6225143489684658, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (55790407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120528 + ... + 120989.

It is an arithmetic number, because the mean of its divisors is an integer number (5796432).

Almost surely, 2^55790427 is an apocalyptic number.

55790427 is a deficient number, since it is larger than the sum of its proper divisors (36952485).

55790427 is a wasteful number, since it uses less digits than its factorization.

55790427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241538.

The product of its (nonzero) digits is 88200, while the sum is 39.

The square root of 55790427 is about 7469.2989630888. The cubic root of 55790427 is about 382.1083795621.

The spelling of 55790427 in words is "fifty-five million, seven hundred ninety thousand, four hundred twenty-seven".