55524557 has 8 divisors (see below), whose sum is σ = 60652800. Its totient is φ = 50409760.

The previous prime is 55524541. The next prime is 55524563. The reversal of 55524557 is 75542555.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55524557 - 2⁴ = 55524541 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55524557.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55524857) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6569 + ... + 12417.

It is an arithmetic number, because the mean of its divisors is an integer number (7581600).

Almost surely, 2^55524557 is an apocalyptic number.

It is an amenable number.

55524557 is a deficient number, since it is larger than the sum of its proper divisors (5128243).

55524557 is a wasteful number, since it uses less digits than its factorization.

55524557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6723.

The product of its digits is 175000, while the sum is 38.

The square root of 55524557 is about 7451.4801885263. The cubic root of 55524557 is about 381.5004320047.

The spelling of 55524557 in words is "fifty-five million, five hundred twenty-four thousand, five hundred fifty-seven".