55161366253 has 16 divisors (see below), whose sum is σ = 64521515520. Its totient is φ = 46171678896.

The previous prime is 55161366251. The next prime is 55161366287. The reversal of 55161366253 is 35266316155.

It is not a de Polignac number, because 55161366253 - 2¹ = 55161366251 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55161366251) 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, 1604478 + ... + 1638496.

It is an arithmetic number, because the mean of its divisors is an integer number (4032594720).

Almost surely, 2^55161366253 is an apocalyptic number.

It is an amenable number.

55161366253 is a deficient number, since it is larger than the sum of its proper divisors (9360149267).

55161366253 is a wasteful number, since it uses less digits than its factorization.

55161366253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39456.

The product of its digits is 486000, while the sum is 43.

The spelling of 55161366253 in words is "fifty-five billion, one hundred sixty-one million, three hundred sixty-six thousand, two hundred fifty-three".