56173669 has 2 divisors, whose sum is σ = 56173670. Its totient is φ = 56173668.

The previous prime is 56173657. The next prime is 56173703. The reversal of 56173669 is 96637165.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 52751169 + 3422500 = 7263^2 + 1850^2 .

It is a cyclic number.

It is not a de Polignac number, because 56173669 - 2¹⁵ = 56140901 is a prime.

It is a super-2 number, since 2×56173669² = 6310962177843122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56173639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28086834 + 28086835.

It is an arithmetic number, because the mean of its divisors is an integer number (28086835).

Almost surely, 2^56173669 is an apocalyptic number.

It is an amenable number.

56173669 is a deficient number, since it is larger than the sum of its proper divisors (1).

56173669 is an equidigital number, since it uses as much as digits as its factorization.

56173669 is an evil number, because the sum of its binary digits is even.

The product of its digits is 204120, while the sum is 43.

The square root of 56173669 is about 7494.9095391472. The cubic root of 56173669 is about 382.9813246603.

The spelling of 56173669 in words is "fifty-six million, one hundred seventy-three thousand, six hundred sixty-nine".