55504731 has 8 divisors (see below), whose sum is σ = 74497024. Its totient is φ = 36757800.

The previous prime is 55504723. The next prime is 55504733. The reversal of 55504731 is 13740555.

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

It is not a de Polignac number, because 55504731 - 2³ = 55504723 is a prime.

It is a super-2 number, since 2×55504731² = 6161550326764722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55504733) 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, 60811 + ... + 61716.

It is an arithmetic number, because the mean of its divisors is an integer number (9312128).

Almost surely, 2^55504731 is an apocalyptic number.

55504731 is a deficient number, since it is larger than the sum of its proper divisors (18992293).

55504731 is a wasteful number, since it uses less digits than its factorization.

55504731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122681.

The product of its (nonzero) digits is 10500, while the sum is 30.

The square root of 55504731 is about 7450.1497300390. The cubic root of 55504731 is about 381.4550194977.

The spelling of 55504731 in words is "fifty-five million, five hundred four thousand, seven hundred thirty-one".