57126557401 has 4 divisors (see below), whose sum is σ = 58063058404. Its totient is φ = 56190056400.

The previous prime is 57126557399. The next prime is 57126557417. The reversal of 57126557401 is 10475562175.

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 10763855001 + 46362702400 = 103749^2 + 215320^2 .

It is a cyclic number.

It is not a de Polignac number, because 57126557401 - 2¹ = 57126557399 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57126507401) 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, 468250410 + ... + 468250531.

It is an arithmetic number, because the mean of its divisors is an integer number (14515764601).

Almost surely, 2^57126557401 is an apocalyptic number.

It is an amenable number.

57126557401 is a deficient number, since it is larger than the sum of its proper divisors (936501003).

57126557401 is an equidigital number, since it uses as much as digits as its factorization.

57126557401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 936501002.

The product of its (nonzero) digits is 294000, while the sum is 43.

The spelling of 57126557401 in words is "fifty-seven billion, one hundred twenty-six million, five hundred fifty-seven thousand, four hundred one".