53540357 has 4 divisors (see below), whose sum is σ = 57658860. Its totient is φ = 49421856.

The previous prime is 53540341. The next prime is 53540363. The reversal of 53540357 is 75304535.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75304535 = 5 ⋅15060907.

It can be written as a sum of positive squares in 2 ways, for example, as 4456321 + 49084036 = 2111^2 + 7006^2 .

It is a cyclic number.

It is not a de Polignac number, because 53540357 - 2⁴ = 53540341 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 (53540257) 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, 2059232 + ... + 2059257.

It is an arithmetic number, because the mean of its divisors is an integer number (14414715).

Almost surely, 2^53540357 is an apocalyptic number.

It is an amenable number.

53540357 is a deficient number, since it is larger than the sum of its proper divisors (4118503).

53540357 is a wasteful number, since it uses less digits than its factorization.

53540357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4118502.

The product of its (nonzero) digits is 31500, while the sum is 32.

The square root of 53540357 is about 7317.1276468297. The cubic root of 53540357 is about 376.9008245484.

The spelling of 53540357 in words is "fifty-three million, five hundred forty thousand, three hundred fifty-seven".