74021953 has 2 divisors, whose sum is σ = 74021954. Its totient is φ = 74021952.

The previous prime is 74021921. The next prime is 74021957. The reversal of 74021953 is 35912047.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 64112049 + 9909904 = 8007^2 + 3148^2 .

It is an emirp because it is prime and its reverse (35912047) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74021953 - 2⁵ = 74021921 is a prime.

It is not a weakly prime, because it can be changed into another prime (74021957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37010976 + 37010977.

It is an arithmetic number, because the mean of its divisors is an integer number (37010977).

Almost surely, 2^74021953 is an apocalyptic number.

It is an amenable number.

74021953 is a deficient number, since it is larger than the sum of its proper divisors (1).

74021953 is an equidigital number, since it uses as much as digits as its factorization.

74021953 is an evil number, because the sum of its binary digits is even.

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

The square root of 74021953 is about 8603.6011646287. The cubic root of 74021953 is about 419.8751575284.

The spelling of 74021953 in words is "seventy-four million, twenty-one thousand, nine hundred fifty-three".