54646243531 has 12 divisors (see below), whose sum is σ = 59683851864. Its totient is φ = 49620314400.

The previous prime is 54646243529. The next prime is 54646243541. The reversal of 54646243531 is 13534264645.

It is a happy number.

It is not a de Polignac number, because 54646243531 - 2¹ = 54646243529 is a prime.

It is a super-2 number, since 2×54646243531² (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 (54646243541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 31751751 + ... + 31753471.

It is an arithmetic number, because the mean of its divisors is an integer number (4973654322).

Almost surely, 2^54646243531 is an apocalyptic number.

54646243531 is a deficient number, since it is larger than the sum of its proper divisors (5037608333).

54646243531 is an equidigital number, since it uses as much as digits as its factorization.

54646243531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5130 (or 3431 counting only the distinct ones).

The product of its digits is 1036800, while the sum is 43.

The spelling of 54646243531 in words is "fifty-four billion, six hundred forty-six million, two hundred forty-three thousand, five hundred thirty-one".