53045257 has 4 divisors (see below), whose sum is σ = 53099776. Its totient is φ = 52990740.

The previous prime is 53045249. The next prime is 53045327. The reversal of 53045257 is 75254035.

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, and also an emirpimes, since its reverse is a distinct semiprime: 75254035 = 5 ⋅15050807.

It is a cyclic number.

It is not a de Polignac number, because 53045257 - 2³ = 53045249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53045957) 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, 25773 + ... + 27754.

It is an arithmetic number, because the mean of its divisors is an integer number (13274944).

Almost surely, 2^53045257 is an apocalyptic number.

It is an amenable number.

53045257 is a deficient number, since it is larger than the sum of its proper divisors (54519).

53045257 is an equidigital number, since it uses as much as digits as its factorization.

53045257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54518.

The product of its (nonzero) digits is 21000, while the sum is 31.

The square root of 53045257 is about 7283.2174895440. The cubic root of 53045257 is about 375.7354621264.

The spelling of 53045257 in words is "fifty-three million, forty-five thousand, two hundred fifty-seven".