55001615565 has 16 divisors (see below), whose sum is σ = 94772014848. Its totient is φ = 27077718336.

The previous prime is 55001615519. The next prime is 55001615611. The reversal of 55001615565 is 56551610055.

55001615565 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (55001615519) and next prime (55001615611).

It is not a de Polignac number, because 55001615565 - 2²⁰ = 55000566989 is a prime.

It is a super-3 number, since 3×55001615565³ (a number of 33 digits) contains 333 as substring.

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

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, 141029589 + ... + 141029978.

It is an arithmetic number, because the mean of its divisors is an integer number (5923250928).

Almost surely, 2^55001615565 is an apocalyptic number.

It is an amenable number.

55001615565 is a deficient number, since it is larger than the sum of its proper divisors (39770399283).

55001615565 is a wasteful number, since it uses less digits than its factorization.

55001615565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282059588.

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

The spelling of 55001615565 in words is "fifty-five billion, one million, six hundred fifteen thousand, five hundred sixty-five".