55431502 has 8 divisors (see below), whose sum is σ = 95025456. Its totient is φ = 23756352.

The previous prime is 55431479. The next prime is 55431539. The reversal of 55431502 is 20513455.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1979683 + ... + 1979710.

It is an arithmetic number, because the mean of its divisors is an integer number (11878182).

Almost surely, 2^55431502 is an apocalyptic number.

55431502 is a deficient number, since it is larger than the sum of its proper divisors (39593954).

55431502 is a wasteful number, since it uses less digits than its factorization.

55431502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3959402.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 55431502 is about 7445.2335087625. The cubic root of 55431502 is about 381.2871907820.

Adding to 55431502 its reverse (20513455), we get a palindrome (75944957).

The spelling of 55431502 in words is "fifty-five million, four hundred thirty-one thousand, five hundred two".