56574157 has 4 divisors (see below), whose sum is σ = 58525020. Its totient is φ = 54623296.

The previous prime is 56574139. The next prime is 56574169. The reversal of 56574157 is 75147565.

It is a happy number.

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 19193161 + 37380996 = 4381^2 + 6114^2 .

It is a cyclic number.

It is not a de Polignac number, because 56574157 - 2¹⁵ = 56541389 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56574187) 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, 975388 + ... + 975445.

It is an arithmetic number, because the mean of its divisors is an integer number (14631255).

Almost surely, 2^56574157 is an apocalyptic number.

It is an amenable number.

56574157 is a deficient number, since it is larger than the sum of its proper divisors (1950863).

56574157 is a wasteful number, since it uses less digits than its factorization.

56574157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1950862.

The product of its digits is 147000, while the sum is 40.

The square root of 56574157 is about 7521.5794219034. The cubic root of 56574157 is about 383.8893204061.

The spelling of 56574157 in words is "fifty-six million, five hundred seventy-four thousand, one hundred fifty-seven".