57005513 has 4 divisors (see below), whose sum is σ = 57222528. Its totient is φ = 56788500.

The previous prime is 57005447. The next prime is 57005519. The reversal of 57005513 is 31550075.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57005513 - 2⁸ = 57005257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57005519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108113 + ... + 108638.

It is an arithmetic number, because the mean of its divisors is an integer number (14305632).

Almost surely, 2^57005513 is an apocalyptic number.

It is an amenable number.

57005513 is a deficient number, since it is larger than the sum of its proper divisors (217015).

57005513 is a wasteful number, since it uses less digits than its factorization.

57005513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217014.

The product of its (nonzero) digits is 2625, while the sum is 26.

The square root of 57005513 is about 7550.1995337872. The cubic root of 57005513 is about 384.8625202053.

Adding to 57005513 its reverse (31550075), we get a palindrome (88555588).

The spelling of 57005513 in words is "fifty-seven million, five thousand, five hundred thirteen".