55428525 has 18 divisors (see below), whose sum is σ = 99279050. Its totient is φ = 29561760.

The previous prime is 55428521. The next prime is 55428539. The reversal of 55428525 is 52582455.

It is a happy number.

55428525 is a `hidden beast` number, since 554 + 2 + 85 + 25 = 666.

It can be written as a sum of positive squares in 3 ways, for example, as 30276 + 55398249 = 174^2 + 7443^2 .

It is not a de Polignac number, because 55428525 - 2² = 55428521 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 55428525.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55428521) 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, 122950 + ... + 123399.

Almost surely, 2^55428525 is an apocalyptic number.

It is an amenable number.

55428525 is a deficient number, since it is larger than the sum of its proper divisors (43850525).

55428525 is a wasteful number, since it uses less digits than its factorization.

55428525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246365 (or 246357 counting only the distinct ones).

The product of its digits is 80000, while the sum is 36.

The square root of 55428525 is about 7445.0335795079. The cubic root of 55428525 is about 381.2803648663.

The spelling of 55428525 in words is "fifty-five million, four hundred twenty-eight thousand, five hundred twenty-five".