55472617565 has 4 divisors (see below), whose sum is σ = 66567141084. Its totient is φ = 44378094048.

The previous prime is 55472617523. The next prime is 55472617579. The reversal of 55472617565 is 56571627455.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 36943146436 + 18529471129 = 192206^2 + 136123^2 .

It is a cyclic number.

It is not a de Polignac number, because 55472617565 - 2¹⁰ = 55472616541 is a prime.

It is a super-2 number, since 2×55472617565² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5547261752 + ... + 5547261761.

It is an arithmetic number, because the mean of its divisors is an integer number (16641785271).

Almost surely, 2^55472617565 is an apocalyptic number.

It is an amenable number.

55472617565 is a deficient number, since it is larger than the sum of its proper divisors (11094523519).

55472617565 is a wasteful number, since it uses less digits than its factorization.

55472617565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11094523518.

The product of its digits is 8820000, while the sum is 53.

The spelling of 55472617565 in words is "fifty-five billion, four hundred seventy-two million, six hundred seventeen thousand, five hundred sixty-five".