51552142501 has 4 divisors (see below), whose sum is σ = 51555681100. Its totient is φ = 51548603904.

The previous prime is 51552142487. The next prime is 51552142529. The reversal of 51552142501 is 10524125515.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 29066840100 + 22485302401 = 170490^2 + 149951^2 .

It is a cyclic number.

It is not a de Polignac number, because 51552142501 - 2⁵ = 51552142469 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 (51552142531) 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, 1747356 + ... + 1776613.

It is an arithmetic number, because the mean of its divisors is an integer number (12888920275).

Almost surely, 2^51552142501 is an apocalyptic number.

It is an amenable number.

51552142501 is a deficient number, since it is larger than the sum of its proper divisors (3538599).

51552142501 is a wasteful number, since it uses less digits than its factorization.

51552142501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3538598.

The product of its (nonzero) digits is 10000, while the sum is 31.

The spelling of 51552142501 in words is "fifty-one billion, five hundred fifty-two million, one hundred forty-two thousand, five hundred one".