54521251045451 has 4 divisors (see below), whose sum is σ = 54644323847352. Its totient is φ = 54398178243552.

The previous prime is 54521251045411. The next prime is 54521251045501. The reversal of 54521251045451 is 15454015212545.

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-54521251045451 is a prime.

It is a super-2 number, since 2×54521251045451² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (54521251045411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61536400286 + ... + 61536401171.

It is an arithmetic number, because the mean of its divisors is an integer number (13661080961838).

Almost surely, 2^{54521251045451} is an apocalyptic number.

54521251045451 is a deficient number, since it is larger than the sum of its proper divisors (123072801901).

54521251045451 is a wasteful number, since it uses less digits than its factorization.

54521251045451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123072801900.

The product of its (nonzero) digits is 800000, while the sum is 44.

Adding to 54521251045451 its reverse (15454015212545), we get a palindrome (69975266257996).

The spelling of 54521251045451 in words is "fifty-four trillion, five hundred twenty-one billion, two hundred fifty-one million, forty-five thousand, four hundred fifty-one".