57561799 has 4 divisors (see below), whose sum is σ = 57579336. Its totient is φ = 57544264.

The previous prime is 57561797. The next prime is 57561809. The reversal of 57561799 is 99716575.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57561799 - 2¹ = 57561797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57561797) 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, 2209 + ... + 10954.

It is an arithmetic number, because the mean of its divisors is an integer number (14394834).

Almost surely, 2^57561799 is an apocalyptic number.

57561799 is a deficient number, since it is larger than the sum of its proper divisors (17537).

57561799 is a wasteful number, since it uses less digits than its factorization.

57561799 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17536.

The product of its digits is 595350, while the sum is 49.

The square root of 57561799 is about 7586.9492551354. The cubic root of 57561799 is about 386.1103584333.

The spelling of 57561799 in words is "fifty-seven million, five hundred sixty-one thousand, seven hundred ninety-nine".