55247019858 has 12 divisors (see below), whose sum is σ = 119701876398. Its totient is φ = 18415673280.

The previous prime is 55247019847. The next prime is 55247019859. The reversal of 55247019858 is 85891074255.

55247019858 is a `hidden beast` number, since 552 + 4 + 7 + 0 + 1 + 9 + 85 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 32411881089 + 22835138769 = 180033^2 + 151113^2 .

It is not an unprimeable number, because it can be changed into a prime (55247019859) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1534639423 + ... + 1534639458.

Almost surely, 2^55247019858 is an apocalyptic number.

55247019858 is an abundant number, since it is smaller than the sum of its proper divisors (64454856540).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55247019858 is a wasteful number, since it uses less digits than its factorization.

55247019858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3069278889 (or 3069278886 counting only the distinct ones).

The product of its (nonzero) digits is 4032000, while the sum is 54.

The spelling of 55247019858 in words is "fifty-five billion, two hundred forty-seven million, nineteen thousand, eight hundred fifty-eight".