63057091 has 2 divisors, whose sum is σ = 63057092. Its totient is φ = 63057090.

The previous prime is 63057083. The next prime is 63057109. The reversal of 63057091 is 19075036.

Together with next prime (63057109) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 63057091 - 2³ = 63057083 is a prime.

It is not a weakly prime, because it can be changed into another prime (63057011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31528545 + 31528546.

It is an arithmetic number, because the mean of its divisors is an integer number (31528546).

Almost surely, 2^63057091 is an apocalyptic number.

63057091 is a deficient number, since it is larger than the sum of its proper divisors (1).

63057091 is an equidigital number, since it uses as much as digits as its factorization.

63057091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 63057091 is about 7940.8495137485. The cubic root of 63057091 is about 398.0258793976.

The spelling of 63057091 in words is "sixty-three million, fifty-seven thousand, ninety-one".