2912621 has 2 divisors, whose sum is σ = 2912622. Its totient is φ = 2912620.

The previous prime is 2912617. The next prime is 2912641. The reversal of 2912621 is 1262192.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1590121 + 1322500 = 1261^2 + 1150^2 .

It is a cyclic number.

It is not a de Polignac number, because 2912621 - 2² = 2912617 is a prime.

It is a super-2 number, since 2×2912621² = 16966722179282, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2912641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1456310 + 1456311.

It is an arithmetic number, because the mean of its divisors is an integer number (1456311).

2^2912621 is an apocalyptic number.

It is an amenable number.

2912621 is a deficient number, since it is larger than the sum of its proper divisors (1).

2912621 is an equidigital number, since it uses as much as digits as its factorization.

2912621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 23.

The square root of 2912621 is about 1706.6402667229. The cubic root of 2912621 is about 142.8108899310.

The spelling of 2912621 in words is "two million, nine hundred twelve thousand, six hundred twenty-one".