55620432 has 100 divisors (see below), whose sum is σ = 184009056. Its totient is φ = 15888960.

The previous prime is 55620431. The next prime is 55620449. The reversal of 55620432 is 23402655.

55620432 is a `hidden beast` number, since 5 + 5 + 620 + 4 + 32 = 666.

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 = 55620396 and 55620405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55620431) by changing a digit.

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 19 ways as a sum of consecutive naturals, for example, 6007 + ... + 12137.

Almost surely, 2^55620432 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 55620432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92004528).

55620432 is an abundant number, since it is smaller than the sum of its proper divisors (128388624).

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

55620432 is a wasteful number, since it uses less digits than its factorization.

55620432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6158 (or 6143 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 27.

The square root of 55620432 is about 7457.9106993849. The cubic root of 55620432 is about 381.7198863853.

The spelling of 55620432 in words is "fifty-five million, six hundred twenty thousand, four hundred thirty-two".