55421325 has 18 divisors (see below), whose sum is σ = 99266154. Its totient is φ = 29557920.

The previous prime is 55421323. The next prime is 55421357. The reversal of 55421325 is 52312455.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 335241 + 55086084 = 579^2 + 7422^2 .

It is not a de Polignac number, because 55421325 - 2¹ = 55421323 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55421323) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 122934 + ... + 123383.

Almost surely, 2^55421325 is an apocalyptic number.

It is an amenable number.

55421325 is a deficient number, since it is larger than the sum of its proper divisors (43844829).

55421325 is a wasteful number, since it uses less digits than its factorization.

55421325 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246333 (or 246325 counting only the distinct ones).

The product of its digits is 6000, while the sum is 27.

The square root of 55421325 is about 7444.5500199811. The cubic root of 55421325 is about 381.2638550909.

The spelling of 55421325 in words is "fifty-five million, four hundred twenty-one thousand, three hundred twenty-five".