2527821 has 16 divisors (see below), whose sum is σ = 3769920. Its totient is φ = 1674000.

The previous prime is 2527799. The next prime is 2527823. The reversal of 2527821 is 1287252.

It is not a de Polignac number, because 2527821 - 2⁶ = 2527757 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2527823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6591 + ... + 6963.

It is an arithmetic number, because the mean of its divisors is an integer number (235620).

2^2527821 is an apocalyptic number.

It is an amenable number.

2527821 is a deficient number, since it is larger than the sum of its proper divisors (1242099).

2527821 is a wasteful number, since it uses less digits than its factorization.

2527821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 627 counting only the distinct ones).

The product of its digits is 2240, while the sum is 27.

The square root of 2527821 is about 1589.9122617302. The cubic root of 2527821 is about 136.2224768354. Note that the first 3 decimals are identical.

The spelling of 2527821 in words is "two million, five hundred twenty-seven thousand, eight hundred twenty-one".