53700657 has 4 divisors (see below), whose sum is σ = 71600880. Its totient is φ = 35800436.

The previous prime is 53700617. The next prime is 53700659. The reversal of 53700657 is 75600735.

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 53700657 - 2¹⁶ = 53635121 is a prime.

It is not an unprimeable number, because it can be changed into a prime (53700659) 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, 8950107 + ... + 8950112.

It is an arithmetic number, because the mean of its divisors is an integer number (17900220).

Almost surely, 2^53700657 is an apocalyptic number.

It is an amenable number.

53700657 is a deficient number, since it is larger than the sum of its proper divisors (17900223).

53700657 is a wasteful number, since it uses less digits than its factorization.

53700657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17900222.

The product of its (nonzero) digits is 22050, while the sum is 33.

The square root of 53700657 is about 7328.0732119705. The cubic root of 53700657 is about 377.2765972005.

The spelling of 53700657 in words is "fifty-three million, seven hundred thousand, six hundred fifty-seven".