55785375501 has 16 divisors (see below), whose sum is σ = 77250585600. Its totient is φ = 35782031408.

The previous prime is 55785375497. The next prime is 55785375511. The reversal of 55785375501 is 10557358755.

55785375501 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 55785375501 - 2² = 55785375497 is a prime.

It is a super-2 number, since 2×55785375501² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55785375511) 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, 3344571 + ... + 3361208.

It is an arithmetic number, because the mean of its divisors is an integer number (4828161600).

Almost surely, 2^55785375501 is an apocalyptic number.

It is an amenable number.

55785375501 is a deficient number, since it is larger than the sum of its proper divisors (21465210099).

55785375501 is a wasteful number, since it uses less digits than its factorization.

55785375501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6705888.

The product of its (nonzero) digits is 3675000, while the sum is 51.

The spelling of 55785375501 in words is "fifty-five billion, seven hundred eighty-five million, three hundred seventy-five thousand, five hundred one".