55851579 has 32 divisors (see below), whose sum is σ = 100131840. Its totient is φ = 30036096.

The previous prime is 55851571. The next prime is 55851581. The reversal of 55851579 is 97515855.

It is not a de Polignac number, because 55851579 - 2³ = 55851571 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55851571) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5479 + ... + 11904.

It is an arithmetic number, because the mean of its divisors is an integer number (3129120).

Almost surely, 2^55851579 is an apocalyptic number.

55851579 is a deficient number, since it is larger than the sum of its proper divisors (44280261).

55851579 is a wasteful number, since it uses less digits than its factorization.

55851579 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17416 (or 17410 counting only the distinct ones).

The product of its digits is 315000, while the sum is 45.

The square root of 55851579 is about 7473.3913988229. The cubic root of 55851579 is about 382.2479385071.

The spelling of 55851579 in words is "fifty-five million, eight hundred fifty-one thousand, five hundred seventy-nine".