55531975542 has 32 divisors (see below), whose sum is σ = 111615834624. Its totient is φ = 18418860000.

The previous prime is 55531975529. The next prime is 55531975553. The reversal of 55531975542 is 24557913555.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1225917 + ... + 1270407.

It is an arithmetic number, because the mean of its divisors is an integer number (3487994832).

Almost surely, 2^55531975542 is an apocalyptic number.

55531975542 is an abundant number, since it is smaller than the sum of its proper divisors (56083859082).

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

55531975542 is a wasteful number, since it uses less digits than its factorization.

55531975542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45524.

The product of its digits is 4725000, while the sum is 51.

The spelling of 55531975542 in words is "fifty-five billion, five hundred thirty-one million, nine hundred seventy-five thousand, five hundred forty-two".