51455591837 has 32 divisors (see below), whose sum is σ = 57704908800. Its totient is φ = 45556535808.

The previous prime is 51455591801. The next prime is 51455591867. The reversal of 51455591837 is 73819555415.

It is a cyclic number.

It is not a de Polignac number, because 51455591837 - 2⁶ = 51455591773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51455591867) 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 31 ways as a sum of consecutive naturals, for example, 47336708 + ... + 47337794.

It is an arithmetic number, because the mean of its divisors is an integer number (1803278400).

Almost surely, 2^51455591837 is an apocalyptic number.

It is an amenable number.

51455591837 is a deficient number, since it is larger than the sum of its proper divisors (6249316963).

51455591837 is a wasteful number, since it uses less digits than its factorization.

51455591837 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1845.

The product of its digits is 3780000, while the sum is 53.

The spelling of 51455591837 in words is "fifty-one billion, four hundred fifty-five million, five hundred ninety-one thousand, eight hundred thirty-seven".