55555555501 has 8 divisors (see below), whose sum is σ = 58826827584. Its totient is φ = 52284649920.

The previous prime is 55555555477. The next prime is 55555555543. The reversal of 55555555501 is 10555555555.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 55555555501 - 2⁵ = 55555555469 is a prime.

It is a super-2 number, since 2×55555555501² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55555555801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 258786 + ... + 421996.

It is an arithmetic number, because the mean of its divisors is an integer number (7353353448).

Almost surely, 2^55555555501 is an apocalyptic number.

It is an amenable number.

55555555501 is a deficient number, since it is larger than the sum of its proper divisors (3271272083).

55555555501 is a wasteful number, since it uses less digits than its factorization.

55555555501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183251.

The product of its (nonzero) digits is 1953125, while the sum is 46.

The spelling of 55555555501 in words is "fifty-five billion, five hundred fifty-five million, five hundred fifty-five thousand, five hundred one".