79650251 has 2 divisors, whose sum is σ = 79650252. Its totient is φ = 79650250.

The previous prime is 79650199. The next prime is 79650257. The reversal of 79650251 is 15205697.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 79650251 - 2⁶ = 79650187 is a prime.

It is not a weakly prime, because it can be changed into another prime (79650257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39825125 + 39825126.

It is an arithmetic number, because the mean of its divisors is an integer number (39825126).

Almost surely, 2^79650251 is an apocalyptic number.

79650251 is a deficient number, since it is larger than the sum of its proper divisors (1).

79650251 is an equidigital number, since it uses as much as digits as its factorization.

79650251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18900, while the sum is 35.

The square root of 79650251 is about 8924.6989304962. The cubic root of 79650251 is about 430.2580945597.

The spelling of 79650251 in words is "seventy-nine million, six hundred fifty thousand, two hundred fifty-one".