55514521 has 4 divisors (see below), whose sum is σ = 57305344. Its totient is φ = 53723700.

The previous prime is 55514513. The next prime is 55514531. The reversal of 55514521 is 12541555.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 55514521 - 2³ = 55514513 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 55514521.

It is not an unprimeable number, because it can be changed into a prime (55514531) 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, 895365 + ... + 895426.

It is an arithmetic number, because the mean of its divisors is an integer number (14326336).

Almost surely, 2^55514521 is an apocalyptic number.

It is an amenable number.

55514521 is a deficient number, since it is larger than the sum of its proper divisors (1790823).

55514521 is a wasteful number, since it uses less digits than its factorization.

55514521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790822.

The product of its digits is 5000, while the sum is 28.

The square root of 55514521 is about 7450.8067348442. The cubic root of 55514521 is about 381.4774453645.

The spelling of 55514521 in words is "fifty-five million, five hundred fourteen thousand, five hundred twenty-one".