57561461 has 4 divisors (see below), whose sum is σ = 57604524. Its totient is φ = 57518400.

The previous prime is 57561457. The next prime is 57561463. The reversal of 57561461 is 16416575.

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

It can be written as a sum of positive squares in 2 ways, for example, as 38254225 + 19307236 = 6185^2 + 4394^2 .

It is a cyclic number.

It is not a de Polignac number, because 57561461 - 2² = 57561457 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 (57561463) 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, 19460 + ... + 22221.

It is an arithmetic number, because the mean of its divisors is an integer number (14401131).

Almost surely, 2^57561461 is an apocalyptic number.

It is an amenable number.

57561461 is a deficient number, since it is larger than the sum of its proper divisors (43063).

57561461 is a wasteful number, since it uses less digits than its factorization.

57561461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43062.

The product of its digits is 25200, while the sum is 35.

The square root of 57561461 is about 7586.9269800098. The cubic root of 57561461 is about 386.1096026916.

The spelling of 57561461 in words is "fifty-seven million, five hundred sixty-one thousand, four hundred sixty-one".