55415502 has 20 divisors (see below), whose sum is σ = 124172136. Its totient is φ = 18471780.

The previous prime is 55415501. The next prime is 55415537. The reversal of 55415502 is 20551455.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55415501) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 170874 + ... + 171197.

Almost surely, 2^55415502 is an apocalyptic number.

55415502 is an abundant number, since it is smaller than the sum of its proper divisors (68756634).

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

55415502 is a wasteful number, since it uses less digits than its factorization.

55415502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 342085 (or 342076 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 55415502 is about 7444.1589182392. The cubic root of 55415502 is about 381.2505017641.

Adding to 55415502 its reverse (20551455), we get a palindrome (75966957).

The spelling of 55415502 in words is "fifty-five million, four hundred fifteen thousand, five hundred two".