52730491 has 16 divisors (see below), whose sum is σ = 60975360. Its totient is φ = 45096480.

The previous prime is 52730479. The next prime is 52730519. The reversal of 52730491 is 19403725.

It is not a de Polignac number, because 52730491 - 2²¹ = 50633339 is a prime.

It is a super-2 number, since 2×52730491² = 5561009362202162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (52730401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32010 + ... + 33616.

It is an arithmetic number, because the mean of its divisors is an integer number (3810960).

Almost surely, 2^52730491 is an apocalyptic number.

52730491 is a deficient number, since it is larger than the sum of its proper divisors (8244869).

52730491 is a wasteful number, since it uses less digits than its factorization.

52730491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1794.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 52730491 is about 7261.5763440179. The cubic root of 52730491 is about 374.9907932554.

The spelling of 52730491 in words is "fifty-two million, seven hundred thirty thousand, four hundred ninety-one".