970346521 has 4 divisors (see below), whose sum is σ = 973095732. Its totient is φ = 967597312.

The previous prime is 970346479. The next prime is 970346539. The reversal of 970346521 is 125643079.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 125643079 = 47 ⋅2673257.

It can be written as a sum of positive squares in 2 ways, for example, as 658435600 + 311910921 = 25660^2 + 17661^2 .

It is a cyclic number.

It is not a de Polignac number, because 970346521 - 2⁷ = 970346393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (970346561) 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, 1374076 + ... + 1374781.

It is an arithmetic number, because the mean of its divisors is an integer number (243273933).

Almost surely, 2^970346521 is an apocalyptic number.

It is an amenable number.

970346521 is a deficient number, since it is larger than the sum of its proper divisors (2749211).

970346521 is a wasteful number, since it uses less digits than its factorization.

970346521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2749210.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 970346521 is about 31150.3855674372. The cubic root of 970346521 is about 990.0161616924.

The spelling of 970346521 in words is "nine hundred seventy million, three hundred forty-six thousand, five hundred twenty-one".