55111624157 has 8 divisors (see below), whose sum is σ = 57016423800. Its totient is φ = 53207117824.

The previous prime is 55111624123. The next prime is 55111624159. The reversal of 55111624157 is 75142611155.

It can be written as a sum of positive squares in 4 ways, for example, as 24442508281 + 30669115876 = 156341^2 + 175126^2 .

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 55111624157 - 2¹² = 55111620061 is a prime.

It is a super-2 number, since 2×55111624157² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 55111624157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55111624159) 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, 350573 + ... + 482829.

It is an arithmetic number, because the mean of its divisors is an integer number (7127052975).

Almost surely, 2^55111624157 is an apocalyptic number.

It is an amenable number.

55111624157 is a deficient number, since it is larger than the sum of its proper divisors (1904799643).

55111624157 is a wasteful number, since it uses less digits than its factorization.

55111624157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146655.

The product of its digits is 42000, while the sum is 38.

The spelling of 55111624157 in words is "fifty-five billion, one hundred eleven million, six hundred twenty-four thousand, one hundred fifty-seven".