102970081 has 4 divisors (see below), whose sum is σ = 102991252. Its totient is φ = 102948912.

The previous prime is 102970073. The next prime is 102970111. The reversal of 102970081 is 180079201.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 64641600 + 38328481 = 8040^2 + 6191^2 .

It is a cyclic number.

It is not a de Polignac number, because 102970081 - 2³ = 102970073 is a prime.

It is a super-2 number, since 2×102970081² = 21205675162293122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102970181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 775 + ... + 14371.

It is an arithmetic number, because the mean of its divisors is an integer number (25747813).

Almost surely, 2^102970081 is an apocalyptic number.

It is an amenable number.

102970081 is a deficient number, since it is larger than the sum of its proper divisors (21171).

102970081 is an equidigital number, since it uses as much as digits as its factorization.

102970081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21170.

The product of its (nonzero) digits is 1008, while the sum is 28.

The square root of 102970081 is about 10147.4174547025. The cubic root of 102970081 is about 468.7094230713.

The spelling of 102970081 in words is "one hundred two million, nine hundred seventy thousand, eighty-one".