52219407731 has 4 divisors (see below), whose sum is σ = 53493051864. Its totient is φ = 50945763600.

The previous prime is 52219407727. The next prime is 52219407743. The reversal of 52219407731 is 13770491225.

It is a happy number.

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

It is not a de Polignac number, because 52219407731 - 2² = 52219407727 is a prime.

It is a super-2 number, since 2×52219407731² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41), and also a Moran number because the ratio is a prime number: 1273644091 = 52219407731 / (5 + 2 + 2 + 1 + 9 + 4 + 0 + 7 + 7 + 3 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52219407761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 636822005 + ... + 636822086.

It is an arithmetic number, because the mean of its divisors is an integer number (13373262966).

Almost surely, 2^52219407731 is an apocalyptic number.

52219407731 is a deficient number, since it is larger than the sum of its proper divisors (1273644133).

52219407731 is a wasteful number, since it uses less digits than its factorization.

52219407731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1273644132.

The product of its (nonzero) digits is 105840, while the sum is 41.

Adding to 52219407731 its reverse (13770491225), we get a palindrome (65989898956).

The spelling of 52219407731 in words is "fifty-two billion, two hundred nineteen million, four hundred seven thousand, seven hundred thirty-one".