55400503042 has 4 divisors (see below), whose sum is σ = 83100754566. Its totient is φ = 27700251520.

The previous prime is 55400503033. The next prime is 55400503097. The reversal of 55400503042 is 24030500455.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 41180179041 + 14220324001 = 202929^2 + 119249^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 55400503042.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13850125759 + ... + 13850125762.

Almost surely, 2^55400503042 is an apocalyptic number.

55400503042 is a deficient number, since it is larger than the sum of its proper divisors (27700251524).

55400503042 is a wasteful number, since it uses less digits than its factorization.

55400503042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27700251523.

The product of its (nonzero) digits is 12000, while the sum is 28.

The spelling of 55400503042 in words is "fifty-five billion, four hundred million, five hundred three thousand, forty-two".