74525861 has 2 divisors, whose sum is σ = 74525862. Its totient is φ = 74525860.

The previous prime is 74525851. The next prime is 74525929. The reversal of 74525861 is 16852547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71656225 + 2869636 = 8465^2 + 1694^2 .

It is an emirp because it is prime and its reverse (16852547) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74525861 - 2⁶ = 74525797 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74525831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37262930 + 37262931.

It is an arithmetic number, because the mean of its divisors is an integer number (37262931).

Almost surely, 2^74525861 is an apocalyptic number.

It is an amenable number.

74525861 is a deficient number, since it is larger than the sum of its proper divisors (1).

74525861 is an equidigital number, since it uses as much as digits as its factorization.

74525861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 67200, while the sum is 38.

The square root of 74525861 is about 8632.8362083385. The cubic root of 74525861 is about 420.8257770844.

The spelling of 74525861 in words is "seventy-four million, five hundred twenty-five thousand, eight hundred sixty-one".