55661032 has 32 divisors (see below), whose sum is σ = 125553600. Its totient is φ = 22598784.

The previous prime is 55661017. The next prime is 55661033. The reversal of 55661032 is 23016655.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (55661033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25093 + ... + 27220.

It is an arithmetic number, because the mean of its divisors is an integer number (3923550).

Almost surely, 2^55661032 is an apocalyptic number.

It is an amenable number.

55661032 is an abundant number, since it is smaller than the sum of its proper divisors (69892568).

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

55661032 is a wasteful number, since it uses less digits than its factorization.

55661032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52345 (or 52341 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 28.

The square root of 55661032 is about 7460.6321447985. The cubic root of 55661032 is about 381.8127422986.

Adding to 55661032 its reverse (23016655), we get a palindrome (78677687).

The spelling of 55661032 in words is "fifty-five million, six hundred sixty-one thousand, thirty-two".