55524551 has 4 divisors (see below), whose sum is σ = 55539504. Its totient is φ = 55509600.

The previous prime is 55524541. The next prime is 55524563. The reversal of 55524551 is 15542555.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 55524551 - 2¹⁰ = 55523527 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55524541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2831 + ... + 10911.

It is an arithmetic number, because the mean of its divisors is an integer number (13884876).

Almost surely, 2^55524551 is an apocalyptic number.

55524551 is a deficient number, since it is larger than the sum of its proper divisors (14953).

55524551 is an equidigital number, since it uses as much as digits as its factorization.

55524551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14952.

The product of its digits is 25000, while the sum is 32.

The square root of 55524551 is about 7451.4797859217. The cubic root of 55524551 is about 381.5004182630.

The spelling of 55524551 in words is "fifty-five million, five hundred twenty-four thousand, five hundred fifty-one".