70875251 has 2 divisors, whose sum is σ = 70875252. Its totient is φ = 70875250.

The previous prime is 70875247. The next prime is 70875289. The reversal of 70875251 is 15257807.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 70875251 - 2² = 70875247 is a prime.

It is a Chen prime.

It is equal to p_4166477 and since 70875251 and 4166477 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (70875221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35437625 + 35437626.

It is an arithmetic number, because the mean of its divisors is an integer number (35437626).

Almost surely, 2^70875251 is an apocalyptic number.

70875251 is a deficient number, since it is larger than the sum of its proper divisors (1).

70875251 is an equidigital number, since it uses as much as digits as its factorization.

70875251 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 70875251 is about 8418.7440274663. The cubic root of 70875251 is about 413.8391149857.

The spelling of 70875251 in words is "seventy million, eight hundred seventy-five thousand, two hundred fifty-one".