57661201 has 4 divisors (see below), whose sum is σ = 62096692. Its totient is φ = 53225712.

The previous prime is 57661189. The next prime is 57661213. The reversal of 57661201 is 10216675.

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

It is an interprime number because it is at equal distance from previous prime (57661189) and next prime (57661213).

It can be written as a sum of positive squares in 2 ways, for example, as 14745600 + 42915601 = 3840^2 + 6551^2 .

It is a cyclic number.

It is not a de Polignac number, because 57661201 - 2⁵ = 57661169 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57661201.

It is not an unprimeable number, because it can be changed into a prime (57661601) 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, 2217726 + ... + 2217751.

It is an arithmetic number, because the mean of its divisors is an integer number (15524173).

Almost surely, 2^57661201 is an apocalyptic number.

It is an amenable number.

57661201 is a deficient number, since it is larger than the sum of its proper divisors (4435491).

57661201 is a wasteful number, since it uses less digits than its factorization.

57661201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4435490.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 57661201 is about 7593.4972838607. The cubic root of 57661201 is about 386.3324853249.

Adding to 57661201 its reverse (10216675), we get a palindrome (67877876).

The spelling of 57661201 in words is "fifty-seven million, six hundred sixty-one thousand, two hundred one".