55622551531 has 4 divisors (see below), whose sum is σ = 55624667112. Its totient is φ = 55620435952.

The previous prime is 55622551507. The next prime is 55622551571. The reversal of 55622551531 is 13515522655.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 55622551531 - 2²⁹ = 55085680619 is a prime.

It is a super-2 number, since 2×55622551531² (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 (55622551571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1017850 + ... + 1071103.

It is an arithmetic number, because the mean of its divisors is an integer number (13906166778).

Almost surely, 2^55622551531 is an apocalyptic number.

55622551531 is a deficient number, since it is larger than the sum of its proper divisors (2115581).

55622551531 is a wasteful number, since it uses less digits than its factorization.

55622551531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2115580.

The product of its digits is 225000, while the sum is 40.

The spelling of 55622551531 in words is "fifty-five billion, six hundred twenty-two million, five hundred fifty-one thousand, five hundred thirty-one".