55879590 has 32 divisors (see below), whose sum is σ = 144428256. Its totient is φ = 13754880.

The previous prime is 55879567. The next prime is 55879591. The reversal of 55879590 is 9597855.

It is a Curzon number.

It is a nialpdrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55879591) 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, 71251 + ... + 72030.

It is an arithmetic number, because the mean of its divisors is an integer number (4513383).

Almost surely, 2^55879590 is an apocalyptic number.

55879590 is an abundant number, since it is smaller than the sum of its proper divisors (88548666).

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

55879590 is a wasteful number, since it uses less digits than its factorization.

55879590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143304.

The product of its (nonzero) digits is 567000, while the sum is 48.

The square root of 55879590 is about 7475.2652126864. The cubic root of 55879590 is about 382.3118302103.

The spelling of 55879590 in words is "fifty-five million, eight hundred seventy-nine thousand, five hundred ninety".