55231510105 has 8 divisors (see below), whose sum is σ = 66286152072. Its totient is φ = 44179648128.

The previous prime is 55231510079. The next prime is 55231510109. The reversal of 55231510105 is 50101513255.

It can be written as a sum of positive squares in 4 ways, for example, as 9211392576 + 46020117529 = 95976^2 + 214523^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55231510105 is a prime.

It is a super-2 number, since 2×55231510105² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55231510109) 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, 651034 + ... + 730963.

It is an arithmetic number, because the mean of its divisors is an integer number (8285769009).

Almost surely, 2^55231510105 is an apocalyptic number.

It is an amenable number.

55231510105 is a deficient number, since it is larger than the sum of its proper divisors (11054641967).

55231510105 is a wasteful number, since it uses less digits than its factorization.

55231510105 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1389995.

The product of its (nonzero) digits is 3750, while the sum is 28.

The spelling of 55231510105 in words is "fifty-five billion, two hundred thirty-one million, five hundred ten thousand, one hundred five".