2970521 has 2 divisors, whose sum is σ = 2970522. Its totient is φ = 2970520.

The previous prime is 2970509. The next prime is 2970523. The reversal of 2970521 is 1250792.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2758921 + 211600 = 1661^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 2970521 - 2¹⁰ = 2969497 is a prime.

It is a super-2 number, since 2×2970521² = 17647990022882, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 2970523, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is equal to p₂₁₄₈₃₈ and since 2970521 and 214838 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 (2970523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1485260 + 1485261.

It is an arithmetic number, because the mean of its divisors is an integer number (1485261).

2^2970521 is an apocalyptic number.

It is an amenable number.

2970521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2970521 is an equidigital number, since it uses as much as digits as its factorization.

2970521 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1260, while the sum is 26.

The square root of 2970521 is about 1723.5199447642. The cubic root of 2970521 is about 143.7510003711.

The spelling of 2970521 in words is "two million, nine hundred seventy thousand, five hundred twenty-one".