55605501 has 32 divisors (see below), whose sum is σ = 94617600. Its totient is φ = 31615920.

The previous prime is 55605497. The next prime is 55605503. The reversal of 55605501 is 10550655.

55605501 is a `hidden beast` number, since 5 + 5 + 605 + 50 + 1 = 666.

It is not a de Polignac number, because 55605501 - 2² = 55605497 is a prime.

It is a super-2 number, since 2×55605501² = 6183943482922002, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55605503) 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, 44556 + ... + 45786.

It is an arithmetic number, because the mean of its divisors is an integer number (2956800).

Almost surely, 2^55605501 is an apocalyptic number.

It is an amenable number.

55605501 is a deficient number, since it is larger than the sum of its proper divisors (39012099).

55605501 is a wasteful number, since it uses less digits than its factorization.

55605501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1486 (or 1480 counting only the distinct ones).

The product of its (nonzero) digits is 3750, while the sum is 27.

The square root of 55605501 is about 7456.9096145790. The cubic root of 55605501 is about 381.6857264582.

The spelling of 55605501 in words is "fifty-five million, six hundred five thousand, five hundred one".