2552731 has 4 divisors (see below), whose sum is σ = 2557872. Its totient is φ = 2547592.

The previous prime is 2552729. The next prime is 2552761. The reversal of 2552731 is 1372552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2552731 - 2¹ = 2552729 is a prime.

It is a super-2 number, since 2×2552731² = 13032871116722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2552696 and 2552705.

It is not an unprimeable number, because it can be changed into a prime (2552761) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1735 + ... + 2848.

It is an arithmetic number, because the mean of its divisors is an integer number (639468).

2^2552731 is an apocalyptic number.

2552731 is a deficient number, since it is larger than the sum of its proper divisors (5141).

2552731 is an equidigital number, since it uses as much as digits as its factorization.

2552731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5140.

The product of its digits is 2100, while the sum is 25.

The square root of 2552731 is about 1597.7268227078. The cubic root of 2552731 is about 136.6684757511.

The spelling of 2552731 in words is "two million, five hundred fifty-two thousand, seven hundred thirty-one".