55047538 has 16 divisors (see below), whose sum is σ = 101626560. Its totient is φ = 21776976.

The previous prime is 55047529. The next prime is 55047557. The reversal of 55047538 is 83574055.

It is a super-2 number, since 2×55047538² = 6060462879722888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 55047497 and 55047506.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 151048 + ... + 151411.

It is an arithmetic number, because the mean of its divisors is an integer number (6351660).

Almost surely, 2^55047538 is an apocalyptic number.

55047538 is a deficient number, since it is larger than the sum of its proper divisors (46579022).

55047538 is a wasteful number, since it uses less digits than its factorization.

55047538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 302481.

The product of its (nonzero) digits is 84000, while the sum is 37.

The square root of 55047538 is about 7419.4028061563. The cubic root of 55047538 is about 380.4047810418.

The spelling of 55047538 in words is "fifty-five million, forty-seven thousand, five hundred thirty-eight".