55077232 has 40 divisors (see below), whose sum is σ = 124563456. Its totient is φ = 23100096.

The previous prime is 55077193. The next prime is 55077251. The reversal of 55077232 is 23277055.

It is a junction number, because it is equal to n+sod(n) for n = 55077194 and 55077203.

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, 33 + ... + 10495.

Almost surely, 2^55077232 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 55077232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62281728).

55077232 is an abundant number, since it is smaller than the sum of its proper divisors (69486224).

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

55077232 is a wasteful number, since it uses less digits than its factorization.

55077232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10525 (or 10519 counting only the distinct ones).

The product of its (nonzero) digits is 14700, while the sum is 31.

The square root of 55077232 is about 7421.4036408216. The cubic root of 55077232 is about 380.4731686544.

The spelling of 55077232 in words is "fifty-five million, seventy-seven thousand, two hundred thirty-two".