57013533 has 6 divisors (see below), whose sum is σ = 82352894. Its totient is φ = 38009016.

The previous prime is 57013513. The next prime is 57013553. The reversal of 57013533 is 33531075.

It is an interprime number because it is at equal distance from previous prime (57013513) and next prime (57013553).

It can be written as a sum of positive squares in only one way, i.e., 56881764 + 131769 = 7542^2 + 363^2 .

It is not a de Polignac number, because 57013533 - 2⁵ = 57013501 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 57013497 and 57013506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57013513) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3167410 + ... + 3167427.

Almost surely, 2^57013533 is an apocalyptic number.

It is an amenable number.

57013533 is a deficient number, since it is larger than the sum of its proper divisors (25339361).

57013533 is a wasteful number, since it uses less digits than its factorization.

57013533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6334843 (or 6334840 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 27.

The square root of 57013533 is about 7550.7306268996. The cubic root of 57013533 is about 384.8805678906.

The spelling of 57013533 in words is "fifty-seven million, thirteen thousand, five hundred thirty-three".