55155506601 has 16 divisors (see below), whose sum is σ = 79202200896. Its totient is φ = 33939900096.

The previous prime is 55155506573. The next prime is 55155506663. The reversal of 55155506601 is 10660555155.

It is not a de Polignac number, because 55155506601 - 2⁷ = 55155506473 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 55155506601.

It is not an unprimeable number, because it can be changed into a prime (55155506501) 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, 956866 + ... + 1012868.

It is an arithmetic number, because the mean of its divisors is an integer number (4950137556).

Almost surely, 2^55155506601 is an apocalyptic number.

It is an amenable number.

55155506601 is a deficient number, since it is larger than the sum of its proper divisors (24046694295).

55155506601 is a wasteful number, since it uses less digits than its factorization.

55155506601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81272.

The product of its (nonzero) digits is 112500, while the sum is 39.

The spelling of 55155506601 in words is "fifty-five billion, one hundred fifty-five million, five hundred six thousand, six hundred one".