2940521 has 2 divisors, whose sum is σ = 2940522. Its totient is φ = 2940520.

The previous prime is 2940517. The next prime is 2940523. The reversal of 2940521 is 1250492.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1784896 + 1155625 = 1336^2 + 1075^2 .

It is a cyclic number.

It is not a de Polignac number, because 2940521 - 2² = 2940517 is a prime.

Together with 2940523, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is equal to p₂₁₂₈₃₇ and since 2940521 and 212837 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 (2940523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1470260 + 1470261.

It is an arithmetic number, because the mean of its divisors is an integer number (1470261).

2^2940521 is an apocalyptic number.

It is an amenable number.

2940521 is a deficient number, since it is larger than the sum of its proper divisors (1).

2940521 is an equidigital number, since it uses as much as digits as its factorization.

2940521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 2940521 is about 1714.7947399033. The cubic root of 2940521 is about 143.2654368651.

The spelling of 2940521 in words is "two million, nine hundred forty thousand, five hundred twenty-one".