77125751 has 2 divisors, whose sum is σ = 77125752. Its totient is φ = 77125750.

The previous prime is 77125717. The next prime is 77125757. The reversal of 77125751 is 15752177.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 77125751 - 2⁶ = 77125687 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (77125757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38562875 + 38562876.

It is an arithmetic number, because the mean of its divisors is an integer number (38562876).

Almost surely, 2^77125751 is an apocalyptic number.

77125751 is a deficient number, since it is larger than the sum of its proper divisors (1).

77125751 is an equidigital number, since it uses as much as digits as its factorization.

77125751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17150, while the sum is 35.

The square root of 77125751 is about 8782.1267925258. The cubic root of 77125751 is about 425.6635558334.

The spelling of 77125751 in words is "seventy-seven million, one hundred twenty-five thousand, seven hundred fifty-one".