53565290 has 8 divisors (see below), whose sum is σ = 96417540. Its totient is φ = 21426112.

The previous prime is 53565263. The next prime is 53565293. The reversal of 53565290 is 9256535.

It can be written as a sum of positive squares in 2 ways, for example, as 43151761 + 10413529 = 6569^2 + 3227^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 53565290.

It is not an unprimeable number, because it can be changed into a prime (53565293) 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, 2678255 + ... + 2678274.

Almost surely, 2^53565290 is an apocalyptic number.

53565290 is a deficient number, since it is larger than the sum of its proper divisors (42852250).

53565290 is a wasteful number, since it uses less digits than its factorization.

53565290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5356536.

The product of its (nonzero) digits is 40500, while the sum is 35.

The square root of 53565290 is about 7318.8311908391. The cubic root of 53565290 is about 376.9593212939.

The spelling of 53565290 in words is "fifty-three million, five hundred sixty-five thousand, two hundred ninety".