55512505501 has 4 divisors (see below), whose sum is σ = 55520107900. Its totient is φ = 55504903104.

The previous prime is 55512505493. The next prime is 55512505603. The reversal of 55512505501 is 10550521555.

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 13457160025 + 42055345476 = 116005^2 + 205074^2 .

It is a cyclic number.

It is not a de Polignac number, because 55512505501 - 2³ = 55512505493 is a prime.

It is a super-2 number, since 2×55512505501² (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 (55515505501) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3790236 + ... + 3804853.

It is an arithmetic number, because the mean of its divisors is an integer number (13880026975).

Almost surely, 2^55512505501 is an apocalyptic number.

It is an amenable number.

55512505501 is a deficient number, since it is larger than the sum of its proper divisors (7602399).

55512505501 is an equidigital number, since it uses as much as digits as its factorization.

55512505501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7602398.

The product of its (nonzero) digits is 31250, while the sum is 34.

The spelling of 55512505501 in words is "fifty-five billion, five hundred twelve million, five hundred five thousand, five hundred one".