475037861 has 2 divisors, whose sum is σ = 475037862. Its totient is φ = 475037860.

The previous prime is 475037807. The next prime is 475037863. The reversal of 475037861 is 168730574.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 326344225 + 148693636 = 18065^2 + 12194^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-475037861 is a prime.

Together with 475037863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (475037863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 237518930 + 237518931.

It is an arithmetic number, because the mean of its divisors is an integer number (237518931).

Almost surely, 2^475037861 is an apocalyptic number.

It is an amenable number.

475037861 is a deficient number, since it is larger than the sum of its proper divisors (1).

475037861 is an equidigital number, since it uses as much as digits as its factorization.

475037861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 141120, while the sum is 41.

The square root of 475037861 is about 21795.3632913058. The cubic root of 475037861 is about 780.2661052384.

The spelling of 475037861 in words is "four hundred seventy-five million, thirty-seven thousand, eight hundred sixty-one".