55657752 has 64 divisors (see below), whose sum is σ = 143078400. Its totient is φ = 18036480.

The previous prime is 55657751. The next prime is 55657753. The reversal of 55657752 is 25775655.

It is an interprime number because it is at equal distance from previous prime (55657751) and next prime (55657753).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55657751) 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, 151473 + ... + 151839.

It is an arithmetic number, because the mean of its divisors is an integer number (2235600).

Almost surely, 2^55657752 is an apocalyptic number.

It is an amenable number.

55657752 is an abundant number, since it is smaller than the sum of its proper divisors (87420648).

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

55657752 is a wasteful number, since it uses less digits than its factorization.

55657752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 536 (or 532 counting only the distinct ones).

The product of its digits is 367500, while the sum is 42.

The square root of 55657752 is about 7460.4123210450. The cubic root of 55657752 is about 381.8052423156.

The spelling of 55657752 in words is "fifty-five million, six hundred fifty-seven thousand, seven hundred fifty-two".