56170993 has 2 divisors, whose sum is σ = 56170994. Its totient is φ = 56170992.

The previous prime is 56170987. The next prime is 56171021. The reversal of 56170993 is 39907165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36881329 + 19289664 = 6073^2 + 4392^2 .

It is a cyclic number.

It is not a de Polignac number, because 56170993 - 2¹³ = 56162801 is a prime.

It is not a weakly prime, because it can be changed into another prime (56170963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28085496 + 28085497.

It is an arithmetic number, because the mean of its divisors is an integer number (28085497).

Almost surely, 2^56170993 is an apocalyptic number.

It is an amenable number.

56170993 is a deficient number, since it is larger than the sum of its proper divisors (1).

56170993 is an equidigital number, since it uses as much as digits as its factorization.

56170993 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 56170993 is about 7494.7310158537. The cubic root of 56170993 is about 382.9752430784.

The spelling of 56170993 in words is "fifty-six million, one hundred seventy thousand, nine hundred ninety-three".