53240457 has 4 divisors (see below), whose sum is σ = 70987280. Its totient is φ = 35493636.

The previous prime is 53240441. The next prime is 53240459. The reversal of 53240457 is 75404235.

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 not a de Polignac number, because 53240457 - 2⁴ = 53240441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53240459) 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 3 ways as a sum of consecutive naturals, for example, 8873407 + ... + 8873412.

It is an arithmetic number, because the mean of its divisors is an integer number (17746820).

Almost surely, 2^53240457 is an apocalyptic number.

It is an amenable number.

53240457 is a deficient number, since it is larger than the sum of its proper divisors (17746823).

53240457 is a wasteful number, since it uses less digits than its factorization.

53240457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17746822.

The product of its (nonzero) digits is 16800, while the sum is 30.

The square root of 53240457 is about 7296.6058547793. The cubic root of 53240457 is about 376.1957846556.

The spelling of 53240457 in words is "fifty-three million, two hundred forty thousand, four hundred fifty-seven".