74412251 has 2 divisors, whose sum is σ = 74412252. Its totient is φ = 74412250.

The previous prime is 74412241. The next prime is 74412259. The reversal of 74412251 is 15221447.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74412251 - 2²² = 70217947 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74412251.

It is not a weakly prime, because it can be changed into another prime (74412259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37206125 + 37206126.

It is an arithmetic number, because the mean of its divisors is an integer number (37206126).

Almost surely, 2^74412251 is an apocalyptic number.

74412251 is a deficient number, since it is larger than the sum of its proper divisors (1).

74412251 is an equidigital number, since it uses as much as digits as its factorization.

74412251 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2240, while the sum is 26.

The square root of 74412251 is about 8626.2535900587. The cubic root of 74412251 is about 420.6118274972.

Adding to 74412251 its reverse (15221447), we get a palindrome (89633698).

The spelling of 74412251 in words is "seventy-four million, four hundred twelve thousand, two hundred fifty-one".