52928981 has 8 divisors (see below), whose sum is σ = 62125440. Its totient is φ = 44141328.

The previous prime is 52928971. The next prime is 52928987. The reversal of 52928981 is 18982925.

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

It is not a de Polignac number, because 52928981 - 2¹⁴ = 52912597 is a prime.

It is a super-2 number, since 2×52928981² = 5602954059396722, 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 (52928987) 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, 101921 + ... + 102438.

It is an arithmetic number, because the mean of its divisors is an integer number (7765680).

Almost surely, 2^52928981 is an apocalyptic number.

It is an amenable number.

52928981 is a deficient number, since it is larger than the sum of its proper divisors (9196459).

52928981 is a wasteful number, since it uses less digits than its factorization.

52928981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204403.

The product of its digits is 103680, while the sum is 44.

The square root of 52928981 is about 7275.2306492647. The cubic root of 52928981 is about 375.4607220251.

The spelling of 52928981 in words is "fifty-two million, nine hundred twenty-eight thousand, nine hundred eighty-one".