75621163 has 2 divisors, whose sum is σ = 75621164. Its totient is φ = 75621162.

The previous prime is 75621149. The next prime is 75621173. The reversal of 75621163 is 36112657.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 75621163 - 2⁹ = 75620651 is a prime.

It is not a weakly prime, because it can be changed into another prime (75621173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37810581 + 37810582.

It is an arithmetic number, because the mean of its divisors is an integer number (37810582).

Almost surely, 2^75621163 is an apocalyptic number.

75621163 is a deficient number, since it is larger than the sum of its proper divisors (1).

75621163 is an equidigital number, since it uses as much as digits as its factorization.

75621163 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7560, while the sum is 31.

The square root of 75621163 is about 8696.0429506759. The cubic root of 75621163 is about 422.8773757939.

The spelling of 75621163 in words is "seventy-five million, six hundred twenty-one thousand, one hundred sixty-three".