55382790 has 16 divisors (see below), whose sum is σ = 132918768. Its totient is φ = 14768736.

The previous prime is 55382783. The next prime is 55382797. The reversal of 55382790 is 9728355.

It is an interprime number because it is at equal distance from previous prime (55382783) and next prime (55382797).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55382797) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 923017 + ... + 923076.

It is an arithmetic number, because the mean of its divisors is an integer number (8307423).

Almost surely, 2^55382790 is an apocalyptic number.

55382790 is an abundant number, since it is smaller than the sum of its proper divisors (77535978).

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

55382790 is a wasteful number, since it uses less digits than its factorization.

55382790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1846103.

The product of its (nonzero) digits is 75600, while the sum is 39.

The square root of 55382790 is about 7441.9614349982. The cubic root of 55382790 is about 381.1754690822.

The spelling of 55382790 in words is "fifty-five million, three hundred eighty-two thousand, seven hundred ninety".