2146531 has 2 divisors, whose sum is σ = 2146532. Its totient is φ = 2146530.

The previous prime is 2146523. The next prime is 2146549. The reversal of 2146531 is 1356412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2146531 - 2³ = 2146523 is a prime.

It is a super-2 number, since 2×2146531² = 9215190667922, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2146511) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1073265 + 1073266.

It is an arithmetic number, because the mean of its divisors is an integer number (1073266).

2^2146531 is an apocalyptic number.

2146531 is a deficient number, since it is larger than the sum of its proper divisors (1).

2146531 is an equidigital number, since it uses as much as digits as its factorization.

2146531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 720, while the sum is 22.

The square root of 2146531 is about 1465.1044331378. The cubic root of 2146531 is about 128.9968350484.

The spelling of 2146531 in words is "two million, one hundred forty-six thousand, five hundred thirty-one".