55040732 has 6 divisors (see below), whose sum is σ = 96321288. Its totient is φ = 27520364.

The previous prime is 55040723. The next prime is 55040743. The reversal of 55040732 is 23704055.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6880088 + ... + 6880095.

It is an arithmetic number, because the mean of its divisors is an integer number (16053548).

Almost surely, 2^55040732 is an apocalyptic number.

It is an amenable number.

55040732 is a deficient number, since it is larger than the sum of its proper divisors (41280556).

55040732 is a wasteful number, since it uses less digits than its factorization.

55040732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13760187 (or 13760185 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 26.

The square root of 55040732 is about 7418.9441297263. The cubic root of 55040732 is about 380.3891028253.

Adding to 55040732 its reverse (23704055), we get a palindrome (78744787).

The spelling of 55040732 in words is "fifty-five million, forty thousand, seven hundred thirty-two".