54425632521 has 32 divisors (see below), whose sum is σ = 80875872000. Its totient is φ = 32325205248.

The previous prime is 54425632519. The next prime is 54425632523. The reversal of 54425632521 is 12523652445.

It is an interprime number because it is at equal distance from previous prime (54425632519) and next prime (54425632523).

It is not a de Polignac number, because 54425632521 - 2¹ = 54425632519 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 54425632521.

It is not an unprimeable number, because it can be changed into a prime (54425632523) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3474535 + ... + 3490163.

It is an arithmetic number, because the mean of its divisors is an integer number (2527371000).

Almost surely, 2^54425632521 is an apocalyptic number.

It is an amenable number.

54425632521 is a deficient number, since it is larger than the sum of its proper divisors (26450239479).

54425632521 is a wasteful number, since it uses less digits than its factorization.

54425632521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18753.

The product of its digits is 288000, while the sum is 39.

The spelling of 54425632521 in words is "fifty-four billion, four hundred twenty-five million, six hundred thirty-two thousand, five hundred twenty-one".