475805251 has 2 divisors, whose sum is σ = 475805252. Its totient is φ = 475805250.

The previous prime is 475805203. The next prime is 475805261. The reversal of 475805251 is 152508574.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 475805251 - 2¹⁹ = 475280963 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 475805251.

It is not a weakly prime, because it can be changed into another prime (475805261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237902625 + 237902626.

It is an arithmetic number, because the mean of its divisors is an integer number (237902626).

Almost surely, 2^475805251 is an apocalyptic number.

475805251 is a deficient number, since it is larger than the sum of its proper divisors (1).

475805251 is an equidigital number, since it uses as much as digits as its factorization.

475805251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56000, while the sum is 37.

The square root of 475805251 is about 21812.9606197783. The cubic root of 475805251 is about 780.6860340637.

The spelling of 475805251 in words is "four hundred seventy-five million, eight hundred five thousand, two hundred fifty-one".