74527121 has 2 divisors, whose sum is σ = 74527122. Its totient is φ = 74527120.

The previous prime is 74527097. The next prime is 74527183. The reversal of 74527121 is 12172547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 55726225 + 18800896 = 7465^2 + 4336^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74527121 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74527021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37263560 + 37263561.

It is an arithmetic number, because the mean of its divisors is an integer number (37263561).

Almost surely, 2^74527121 is an apocalyptic number.

It is an amenable number.

74527121 is a deficient number, since it is larger than the sum of its proper divisors (1).

74527121 is an equidigital number, since it uses as much as digits as its factorization.

74527121 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3920, while the sum is 29.

The square root of 74527121 is about 8632.9091852052. The cubic root of 74527121 is about 420.8281486884.

Adding to 74527121 its reverse (12172547), we get a palindrome (86699668).

The spelling of 74527121 in words is "seventy-four million, five hundred twenty-seven thousand, one hundred twenty-one".