52442981 has 8 divisors (see below), whose sum is σ = 54037464. Its totient is φ = 50872320.

The previous prime is 52442959. The next prime is 52443007. The reversal of 52442981 is 18924425.

It can be written as a sum of positive squares in 4 ways, for example, as 2669956 + 49773025 = 1634^2 + 7055^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-52442981 is a prime.

It is a super-2 number, since 2×52442981² = 5500532512332722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52442911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1436 + ... + 10341.

It is an arithmetic number, because the mean of its divisors is an integer number (6754683).

Almost surely, 2^52442981 is an apocalyptic number.

It is an amenable number.

52442981 is a deficient number, since it is larger than the sum of its proper divisors (1594483).

52442981 is a wasteful number, since it uses less digits than its factorization.

52442981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11911.

The product of its digits is 23040, while the sum is 35.

The square root of 52442981 is about 7241.7526193595. The cubic root of 52442981 is about 374.3080121559.

The spelling of 52442981 in words is "fifty-two million, four hundred forty-two thousand, nine hundred eighty-one".