55235724 has 12 divisors (see below), whose sum is σ = 128883384. Its totient is φ = 18411904.

The previous prime is 55235723. The next prime is 55235731. The reversal of 55235724 is 42753255.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (55235723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2301477 + ... + 2301500.

It is an arithmetic number, because the mean of its divisors is an integer number (10740282).

Almost surely, 2^55235724 is an apocalyptic number.

It is an amenable number.

55235724 is an abundant number, since it is smaller than the sum of its proper divisors (73647660).

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

55235724 is a wasteful number, since it uses less digits than its factorization.

55235724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4602984 (or 4602982 counting only the distinct ones).

The product of its digits is 42000, while the sum is 33.

The square root of 55235724 is about 7432.0740039373. The cubic root of 55235724 is about 380.8377730549.

Adding to 55235724 its reverse (42753255), we get a palindrome (97988979).

The spelling of 55235724 in words is "fifty-five million, two hundred thirty-five thousand, seven hundred twenty-four".