70791251 has 2 divisors, whose sum is σ = 70791252. Its totient is φ = 70791250.

The previous prime is 70791229. The next prime is 70791257. The reversal of 70791251 is 15219707.

It is a strong prime.

It is an emirp because it is prime and its reverse (15219707) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 70791251 - 2⁶ = 70791187 is a prime.

It is a super-2 number, since 2×70791251² = 10022802436290002, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (70791257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35395625 + 35395626.

It is an arithmetic number, because the mean of its divisors is an integer number (35395626).

Almost surely, 2^70791251 is an apocalyptic number.

70791251 is a deficient number, since it is larger than the sum of its proper divisors (1).

70791251 is an equidigital number, since it uses as much as digits as its factorization.

70791251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4410, while the sum is 32.

The square root of 70791251 is about 8413.7536807301. The cubic root of 70791251 is about 413.6755589371.

The spelling of 70791251 in words is "seventy million, seven hundred ninety-one thousand, two hundred fifty-one".