55015625527631 has 4 divisors (see below), whose sum is σ = 55016007282192. Its totient is φ = 55015243773072.

The previous prime is 55015625527619. The next prime is 55015625527651. The reversal of 55015625527631 is 13672552651055.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55015625527631 is a prime.

It is a super-2 number, since 2×55015625527631² (a number of 28 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 (55015625527651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 190661030 + ... + 190949363.

It is an arithmetic number, because the mean of its divisors is an integer number (13754001820548).

Almost surely, 2^{55015625527631} is an apocalyptic number.

55015625527631 is a deficient number, since it is larger than the sum of its proper divisors (381754561).

55015625527631 is a wasteful number, since it uses less digits than its factorization.

55015625527631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 381754560.

The product of its (nonzero) digits is 9450000, while the sum is 53.

The spelling of 55015625527631 in words is "fifty-five trillion, fifteen billion, six hundred twenty-five million, five hundred twenty-seven thousand, six hundred thirty-one".