54642525517 has 4 divisors (see below), whose sum is σ = 57018287520. Its totient is φ = 52266763516.

The previous prime is 54642525499. The next prime is 54642525533. The reversal of 54642525517 is 71552524645.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 54642525517 - 2¹¹ = 54642523469 is a prime.

It is a super-2 number, since 2×54642525517² (a number of 22 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 (54642525547) 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, 1187880967 + ... + 1187881012.

It is an arithmetic number, because the mean of its divisors is an integer number (14254571880).

Almost surely, 2^54642525517 is an apocalyptic number.

It is an amenable number.

54642525517 is a deficient number, since it is larger than the sum of its proper divisors (2375762003).

54642525517 is a wasteful number, since it uses less digits than its factorization.

54642525517 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2375762002.

The product of its digits is 1680000, while the sum is 46.

The spelling of 54642525517 in words is "fifty-four billion, six hundred forty-two million, five hundred twenty-five thousand, five hundred seventeen".