51552512453 has 4 divisors (see below), whose sum is σ = 55518090348. Its totient is φ = 47586934560.

The previous prime is 51552512443. The next prime is 51552512503. The reversal of 51552512453 is 35421525515.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 35421525515 = 5 ⋅7084305103.

It can be written as a sum of positive squares in 2 ways, for example, as 24076797889 + 27475714564 = 155167^2 + 165758^2 .

It is a cyclic number.

It is not a de Polignac number, because 51552512453 - 2¹⁴ = 51552496069 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 (51552512443) 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, 1982788928 + ... + 1982788953.

It is an arithmetic number, because the mean of its divisors is an integer number (13879522587).

Almost surely, 2^51552512453 is an apocalyptic number.

It is an amenable number.

51552512453 is a deficient number, since it is larger than the sum of its proper divisors (3965577895).

51552512453 is a wasteful number, since it uses less digits than its factorization.

51552512453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3965577894.

The product of its digits is 150000, while the sum is 38.

The spelling of 51552512453 in words is "fifty-one billion, five hundred fifty-two million, five hundred twelve thousand, four hundred fifty-three".