52394308981 has 4 divisors (see below), whose sum is σ = 59879210272. Its totient is φ = 44909407692.

The previous prime is 52394308949. The next prime is 52394308991. The reversal of 52394308981 is 18980349325.

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 52394308981 - 2⁵ = 52394308949 is a prime.

It is a super-2 number, since 2×52394308981² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52394308991) 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, 3742450635 + ... + 3742450648.

It is an arithmetic number, because the mean of its divisors is an integer number (14969802568).

Almost surely, 2^52394308981 is an apocalyptic number.

It is an amenable number.

52394308981 is a deficient number, since it is larger than the sum of its proper divisors (7484901291).

52394308981 is an equidigital number, since it uses as much as digits as its factorization.

52394308981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7484901290.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 52394308981 in words is "fifty-two billion, three hundred ninety-four million, three hundred eight thousand, nine hundred eighty-one".