55447239770 has 32 divisors (see below), whose sum is σ = 107530657920. Its totient is φ = 20463624000.

The previous prime is 55447239767. The next prime is 55447239779. The reversal of 55447239770 is 7793274455.

It is a super-2 number, since 2×55447239770² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55447239779) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 197891 + ... + 387369.

It is an arithmetic number, because the mean of its divisors is an integer number (3360333060).

Almost surely, 2^55447239770 is an apocalyptic number.

55447239770 is a deficient number, since it is larger than the sum of its proper divisors (52083418150).

55447239770 is a wasteful number, since it uses less digits than its factorization.

55447239770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191750.

The product of its (nonzero) digits is 7408800, while the sum is 53.

The spelling of 55447239770 in words is "fifty-five billion, four hundred forty-seven million, two hundred thirty-nine thousand, seven hundred seventy".