970038521 has 4 divisors (see below), whose sum is σ = 1021093200. Its totient is φ = 918983844.

The previous prime is 970038497. The next prime is 970038539. The reversal of 970038521 is 125830079.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-970038521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (970038541) 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, 25527311 + ... + 25527348.

It is an arithmetic number, because the mean of its divisors is an integer number (255273300).

Almost surely, 2^970038521 is an apocalyptic number.

It is an amenable number.

970038521 is a deficient number, since it is larger than the sum of its proper divisors (51054679).

970038521 is a wasteful number, since it uses less digits than its factorization.

970038521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51054678.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 970038521 is about 31145.4414160403. The cubic root of 970038521 is about 989.9114028119.

The spelling of 970038521 in words is "nine hundred seventy million, thirty-eight thousand, five hundred twenty-one".