70521097 has 2 divisors, whose sum is σ = 70521098. Its totient is φ = 70521096.

The previous prime is 70521089. The next prime is 70521119. The reversal of 70521097 is 79012507.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36228361 + 34292736 = 6019^2 + 5856^2 .

It is a cyclic number.

It is not a de Polignac number, because 70521097 - 2³ = 70521089 is a prime.

It is not a weakly prime, because it can be changed into another prime (70522097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35260548 + 35260549.

It is an arithmetic number, because the mean of its divisors is an integer number (35260549).

Almost surely, 2^70521097 is an apocalyptic number.

It is an amenable number.

70521097 is a deficient number, since it is larger than the sum of its proper divisors (1).

70521097 is an equidigital number, since it uses as much as digits as its factorization.

70521097 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 31.

The square root of 70521097 is about 8397.6840259681. The cubic root of 70521097 is about 413.1486643987.

The spelling of 70521097 in words is "seventy million, five hundred twenty-one thousand, ninety-seven".