57535105561 has 4 divisors (see below), whose sum is σ = 59090108452. Its totient is φ = 55980102672.

The previous prime is 57535105547. The next prime is 57535105571. The reversal of 57535105561 is 16550153575.

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 47282328025 + 10252777536 = 217445^2 + 101256^2 .

It is a cyclic number.

It is not a de Polignac number, because 57535105561 - 2⁹ = 57535105049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57535105571) 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, 777501390 + ... + 777501463.

It is an arithmetic number, because the mean of its divisors is an integer number (14772527113).

Almost surely, 2^57535105561 is an apocalyptic number.

It is an amenable number.

57535105561 is a deficient number, since it is larger than the sum of its proper divisors (1555002891).

57535105561 is a wasteful number, since it uses less digits than its factorization.

57535105561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1555002890.

The product of its (nonzero) digits is 393750, while the sum is 43.

The spelling of 57535105561 in words is "fifty-seven billion, five hundred thirty-five million, one hundred five thousand, five hundred sixty-one".