57561247 has 8 divisors (see below), whose sum is σ = 59214960. Its totient is φ = 55930560.

The previous prime is 57561227. The next prime is 57561263. The reversal of 57561247 is 74216575.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57561247 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 (57561227) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 622 + ... + 10747.

It is an arithmetic number, because the mean of its divisors is an integer number (7401870).

Almost surely, 2^57561247 is an apocalyptic number.

57561247 is a deficient number, since it is larger than the sum of its proper divisors (1653713).

57561247 is a wasteful number, since it uses less digits than its factorization.

57561247 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11513.

The product of its digits is 58800, while the sum is 37.

The square root of 57561247 is about 7586.9128767899. The cubic root of 57561247 is about 386.1091242027.

The spelling of 57561247 in words is "fifty-seven million, five hundred sixty-one thousand, two hundred forty-seven".