74542651 has 2 divisors, whose sum is σ = 74542652. Its totient is φ = 74542650.

The previous prime is 74542627. The next prime is 74542661. The reversal of 74542651 is 15624547.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 74542651 - 2⁵ = 74542619 is a prime.

It is not a weakly prime, because it can be changed into another prime (74542661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37271325 + 37271326.

It is an arithmetic number, because the mean of its divisors is an integer number (37271326).

Almost surely, 2^74542651 is an apocalyptic number.

74542651 is the 5461-st centered pentagonal number.

74542651 is a deficient number, since it is larger than the sum of its proper divisors (1).

74542651 is an equidigital number, since it uses as much as digits as its factorization.

74542651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 33600, while the sum is 34.

The square root of 74542651 is about 8633.8086033917. The cubic root of 74542651 is about 420.8573774540.

The spelling of 74542651 in words is "seventy-four million, five hundred forty-two thousand, six hundred fifty-one".