74911951 has 2 divisors, whose sum is σ = 74911952. Its totient is φ = 74911950.

The previous prime is 74911933. The next prime is 74911973. The reversal of 74911951 is 15911947.

It is a weak prime.

It is an emirp because it is prime and its reverse (15911947) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74911951 - 2⁹ = 74911439 is a prime.

It is a super-2 number, since 2×74911951² = 11223600805252802, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 74911951.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74911931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37455975 + 37455976.

It is an arithmetic number, because the mean of its divisors is an integer number (37455976).

Almost surely, 2^74911951 is an apocalyptic number.

74911951 is a deficient number, since it is larger than the sum of its proper divisors (1).

74911951 is an equidigital number, since it uses as much as digits as its factorization.

74911951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11340, while the sum is 37.

The square root of 74911951 is about 8655.1690335891. The cubic root of 74911951 is about 421.5512382439.

It can be divided in two parts, 74 and 911951, that added together give a square (912025 = 955²).

The spelling of 74911951 in words is "seventy-four million, nine hundred eleven thousand, nine hundred fifty-one".