74751751 has 2 divisors, whose sum is σ = 74751752. Its totient is φ = 74751750.

The previous prime is 74751739. The next prime is 74751767. The reversal of 74751751 is 15715747.

It is a weak prime.

It is an emirp because it is prime and its reverse (15715747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74751751 - 2⁷ = 74751623 is a prime.

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 74751751.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74751731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37375875 + 37375876.

It is an arithmetic number, because the mean of its divisors is an integer number (37375876).

Almost surely, 2^74751751 is an apocalyptic number.

74751751 is a deficient number, since it is larger than the sum of its proper divisors (1).

74751751 is an equidigital number, since it uses as much as digits as its factorization.

74751751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34300, while the sum is 37.

The square root of 74751751 is about 8645.9094952469. The cubic root of 74751751 is about 421.2505265221.

The spelling of 74751751 in words is "seventy-four million, seven hundred fifty-one thousand, seven hundred fifty-one".