53375517 has 40 divisors (see below), whose sum is σ = 86658264. Its totient is φ = 32545152.

The previous prime is 53375507. The next prime is 53375519. The reversal of 53375517 is 71557335.

It is a happy number.

53375517 is a `hidden beast` number, since 533 + 75 + 51 + 7 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22838841 + 30536676 = 4779^2 + 5526^2 .

It is not a de Polignac number, because 53375517 - 2⁶ = 53375453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53375519) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 182023 + ... + 182315.

Almost surely, 2^53375517 is an apocalyptic number.

It is an amenable number.

53375517 is a deficient number, since it is larger than the sum of its proper divisors (33282747).

53375517 is a wasteful number, since it uses less digits than its factorization.

53375517 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491 (or 482 counting only the distinct ones).

The product of its digits is 55125, while the sum is 36.

The square root of 53375517 is about 7305.8549807671. The cubic root of 53375517 is about 376.5136262747.

The spelling of 53375517 in words is "fifty-three million, three hundred seventy-five thousand, five hundred seventeen".