53719857 has 24 divisors (see below), whose sum is σ = 80098304. Its totient is φ = 34673184.

The previous prime is 53719849. The next prime is 53719867. The reversal of 53719857 is 75891735.

It is not a de Polignac number, because 53719857 - 2³ = 53719849 is a prime.

It is a super-2 number, since 2×53719857² = 5771646072200898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (53719817) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48603 + ... + 49695.

Almost surely, 2^53719857 is an apocalyptic number.

It is an amenable number.

53719857 is a deficient number, since it is larger than the sum of its proper divisors (26378447).

53719857 is a wasteful number, since it uses less digits than its factorization.

53719857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1269 (or 1266 counting only the distinct ones).

The product of its digits is 264600, while the sum is 45.

The square root of 53719857 is about 7329.3831254752. The cubic root of 53719857 is about 377.3215553565.

The spelling of 53719857 in words is "fifty-three million, seven hundred nineteen thousand, eight hundred fifty-seven".