53075757 has 16 divisors (see below), whose sum is σ = 81100800. Its totient is φ = 30245232.

The previous prime is 53075747. The next prime is 53075779. The reversal of 53075757 is 75757035.

It is not a de Polignac number, because 53075757 - 2⁴ = 53075741 is a prime.

It is a super-2 number, since 2×53075757² = 5634071962246098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53075747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4744 + ... + 11342.

It is an arithmetic number, because the mean of its divisors is an integer number (5068800).

Almost surely, 2^53075757 is an apocalyptic number.

It is an amenable number.

53075757 is a deficient number, since it is larger than the sum of its proper divisors (28025043).

53075757 is a wasteful number, since it uses less digits than its factorization.

53075757 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6992.

The product of its (nonzero) digits is 128625, while the sum is 39.

The square root of 53075757 is about 7285.3110434627. The cubic root of 53075757 is about 375.8074618774.

The spelling of 53075757 in words is "fifty-three million, seventy-five thousand, seven hundred fifty-seven".