74265161 has 2 divisors, whose sum is σ = 74265162. Its totient is φ = 74265160.

The previous prime is 74265133. The next prime is 74265173. The reversal of 74265161 is 16156247.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70879561 + 3385600 = 8419^2 + 1840^2 .

It is an emirp because it is prime and its reverse (16156247) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74265161 is a prime.

It is not a weakly prime, because it can be changed into another prime (74265101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37132580 + 37132581.

It is an arithmetic number, because the mean of its divisors is an integer number (37132581).

Almost surely, 2^74265161 is an apocalyptic number.

It is an amenable number.

74265161 is a deficient number, since it is larger than the sum of its proper divisors (1).

74265161 is an equidigital number, since it uses as much as digits as its factorization.

74265161 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10080, while the sum is 32.

The square root of 74265161 is about 8617.7236553512. The cubic root of 74265161 is about 420.3345048691.

The spelling of 74265161 in words is "seventy-four million, two hundred sixty-five thousand, one hundred sixty-one".