55697004 has 96 divisors (see below), whose sum is σ = 159022080. Its totient is φ = 16718400.

The previous prime is 55696973. The next prime is 55697041. The reversal of 55697004 is 40079655.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 55697004.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 205389 + ... + 205659.

It is an arithmetic number, because the mean of its divisors is an integer number (1656480).

Almost surely, 2^55697004 is an apocalyptic number.

55697004 is a gapful number since it is divisible by the number (54) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55697004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79511040).

55697004 is an abundant number, since it is smaller than the sum of its proper divisors (103325076).

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

55697004 is a wasteful number, since it uses less digits than its factorization.

55697004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 37800, while the sum is 36.

The square root of 55697004 is about 7463.0425430919. The cubic root of 55697004 is about 381.8949758337.

The spelling of 55697004 in words is "fifty-five million, six hundred ninety-seven thousand, four".