55876590 has 144 divisors (see below), whose sum is σ = 182748384. Its totient is φ = 11594880.

The previous prime is 55876567. The next prime is 55876619. The reversal of 55876590 is 9567855.

55876590 is a `hidden beast` number, since 5 + 58 + 7 + 6 + 590 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 75864 + ... + 76596.

It is an arithmetic number, because the mean of its divisors is an integer number (1269086).

Almost surely, 2^55876590 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55876590, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91374192).

55876590 is an abundant number, since it is smaller than the sum of its proper divisors (126871794).

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

55876590 is a wasteful number, since it uses less digits than its factorization.

55876590 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 775 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 378000, while the sum is 45.

The square root of 55876590 is about 7475.0645482163. The cubic root of 55876590 is about 382.3049883800.

It can be divided in two parts, 558765 and 90, that added together give a palindrome (558855).

The spelling of 55876590 in words is "fifty-five million, eight hundred seventy-six thousand, five hundred ninety".