52720493 has 4 divisors (see below), whose sum is σ = 60252000. Its totient is φ = 45188988.

The previous prime is 52720487. The next prime is 52720501. The reversal of 52720493 is 39402725.

It is a happy number.

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 52720493 - 2⁸ = 52720237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (52720403) 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, 3765743 + ... + 3765756.

It is an arithmetic number, because the mean of its divisors is an integer number (15063000).

Almost surely, 2^52720493 is an apocalyptic number.

It is an amenable number.

52720493 is a deficient number, since it is larger than the sum of its proper divisors (7531507).

52720493 is an equidigital number, since it uses as much as digits as its factorization.

52720493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7531506.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 52720493 is about 7260.8878933640. The cubic root of 52720493 is about 374.9670916307.

The spelling of 52720493 in words is "fifty-two million, seven hundred twenty thousand, four hundred ninety-three".