52507081 has 8 divisors (see below), whose sum is σ = 59256000. Its totient is φ = 46087440.

The previous prime is 52507073. The next prime is 52507093. The reversal of 52507081 is 18070525.

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

It is a cyclic number.

It is not a de Polignac number, because 52507081 - 2³ = 52507073 is a prime.

It is a super-2 number, since 2×52507081² = 5513987110281122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52501081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81981 + ... + 82618.

It is an arithmetic number, because the mean of its divisors is an integer number (7407000).

Almost surely, 2^52507081 is an apocalyptic number.

It is an amenable number.

52507081 is a deficient number, since it is larger than the sum of its proper divisors (6748919).

52507081 is a wasteful number, since it uses less digits than its factorization.

52507081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164639.

The product of its (nonzero) digits is 2800, while the sum is 28.

The square root of 52507081 is about 7246.1769920421. The cubic root of 52507081 is about 374.4604531138.

The spelling of 52507081 in words is "fifty-two million, five hundred seven thousand, eighty-one".