55252530 has 40 divisors (see below), whose sum is σ = 148570092. Its totient is φ = 14733792.

The previous prime is 55252529. The next prime is 55252541. The reversal of 55252530 is 3525255.

It can be written as a sum of positive squares in 2 ways, for example, as 54066609 + 1185921 = 7353^2 + 1089^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 55252494 and 55252503.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33297 + ... + 34916.

Almost surely, 2^55252530 is an apocalyptic number.

55252530 is an abundant number, since it is smaller than the sum of its proper divisors (93317562).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55252530 is a wasteful number, since it uses less digits than its factorization.

55252530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68232 (or 68223 counting only the distinct ones).

The product of its (nonzero) digits is 7500, while the sum is 27.

The square root of 55252530 is about 7433.2045579279. The cubic root of 55252530 is about 380.8763936561.

Adding to 55252530 its reverse (3525255), we get a palindrome (58777785).

The spelling of 55252530 in words is "fifty-five million, two hundred fifty-two thousand, five hundred thirty".