56775001 has 2 divisors, whose sum is σ = 56775002. Its totient is φ = 56775000.

The previous prime is 56774999. The next prime is 56775023. The reversal of 56775001 is 10057765.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46566976 + 10208025 = 6824^2 + 3195^2 .

It is a cyclic number.

It is not a de Polignac number, because 56775001 - 2¹ = 56774999 is a prime.

Together with 56774999, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (56775091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28387500 + 28387501.

It is an arithmetic number, because the mean of its divisors is an integer number (28387501).

Almost surely, 2^56775001 is an apocalyptic number.

It is an amenable number.

56775001 is a deficient number, since it is larger than the sum of its proper divisors (1).

56775001 is an equidigital number, since it uses as much as digits as its factorization.

56775001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7350, while the sum is 31.

The square root of 56775001 is about 7534.9187785934. The cubic root of 56775001 is about 384.3430658996.

The spelling of 56775001 in words is "fifty-six million, seven hundred seventy-five thousand, one".