55312632 has 96 divisors (see below), whose sum is σ = 159759600. Its totient is φ = 17915904.

The previous prime is 55312627. The next prime is 55312637. The reversal of 55312632 is 23621355.

It is an interprime number because it is at equal distance from previous prime (55312627) and next prime (55312637).

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 = 55312596 and 55312605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55312637) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 71544 + ... + 72312.

Almost surely, 2^55312632 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 55312632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79879800).

55312632 is an abundant number, since it is smaller than the sum of its proper divisors (104446968).

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

55312632 is a wasteful number, since it uses less digits than its factorization.

55312632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 811 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 55312632 is about 7437.2462645794. The cubic root of 55312632 is about 381.0144454812.

Adding to 55312632 its reverse (23621355), we get a palindrome (78933987).

The spelling of 55312632 in words is "fifty-five million, three hundred twelve thousand, six hundred thirty-two".