55156615502 has 16 divisors (see below), whose sum is σ = 83099476800. Its totient is φ = 27456841440.

The previous prime is 55156615457. The next prime is 55156615513. The reversal of 55156615502 is 20551665155.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 55156615502.

It is a congruent number.

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, 2795552 + ... + 2815212.

It is an arithmetic number, because the mean of its divisors is an integer number (5193717300).

Almost surely, 2^55156615502 is an apocalyptic number.

55156615502 is a deficient number, since it is larger than the sum of its proper divisors (27942861298).

55156615502 is a wasteful number, since it uses less digits than its factorization.

55156615502 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25771.

The product of its (nonzero) digits is 225000, while the sum is 41.

The spelling of 55156615502 in words is "fifty-five billion, one hundred fifty-six million, six hundred fifteen thousand, five hundred two".