55415232 has 56 divisors (see below), whose sum is σ = 162915600. Its totient is φ = 18471168.

The previous prime is 55415221. The next prime is 55415251. The reversal of 55415232 is 23251455.

It is a happy number.

It is a super-2 number, since 2×55415232² = 6141695875227648, which contains 22 as substring.

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 = 55415196 and 55415205.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14307 + ... + 17762.

Almost surely, 2^55415232 is an apocalyptic number.

It is an amenable number.

55415232 is an abundant number, since it is smaller than the sum of its proper divisors (107500368).

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

55415232 is a wasteful number, since it uses less digits than its factorization.

55415232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32090 (or 32074 counting only the distinct ones).

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

The square root of 55415232 is about 7444.1407831932. The cubic root of 55415232 is about 381.2498825763.

Adding to 55415232 its reverse (23251455), we get a palindrome (78666687).

The spelling of 55415232 in words is "fifty-five million, four hundred fifteen thousand, two hundred thirty-two".