53397957 has 8 divisors (see below), whose sum is σ = 71400384. Its totient is φ = 35497088.

The previous prime is 53397947. The next prime is 53397983. The reversal of 53397957 is 75979335.

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

It is a cyclic number.

It is not a de Polignac number, because 53397957 - 2⁷ = 53397829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53397937) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24153 + ... + 26270.

It is an arithmetic number, because the mean of its divisors is an integer number (8925048).

Almost surely, 2^53397957 is an apocalyptic number.

It is an amenable number.

53397957 is a deficient number, since it is larger than the sum of its proper divisors (18002427).

53397957 is a wasteful number, since it uses less digits than its factorization.

53397957 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50779.

The product of its digits is 893025, while the sum is 48.

The square root of 53397957 is about 7307.3905739327. The cubic root of 53397957 is about 376.5663831845.

The spelling of 53397957 in words is "fifty-three million, three hundred ninety-seven thousand, nine hundred fifty-seven".