2977531 has 2 divisors, whose sum is σ = 2977532. Its totient is φ = 2977530.

The previous prime is 2977529. The next prime is 2977537. The reversal of 2977531 is 1357792.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2977531 - 2¹ = 2977529 is a prime.

It is a super-2 number, since 2×2977531² = 17731381711922, which contains 22 as substring.

Together with 2977529, it forms a pair of twin primes.

2977531 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2977537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1488765 + 1488766.

It is an arithmetic number, because the mean of its divisors is an integer number (1488766).

2^2977531 is an apocalyptic number.

2977531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2977531 is an equidigital number, since it uses as much as digits as its factorization.

2977531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13230, while the sum is 34.

The square root of 2977531 is about 1725.5523753280. The cubic root of 2977531 is about 143.8639887301.

The spelling of 2977531 in words is "two million, nine hundred seventy-seven thousand, five hundred thirty-one".