2497028581 has 2 divisors, whose sum is σ = 2497028582. Its totient is φ = 2497028580.

The previous prime is 2497028539. The next prime is 2497028587. The reversal of 2497028581 is 1858207942.

2497028581 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1456643556 + 1040385025 = 38166^2 + 32255^2 .

It is a cyclic number.

It is not a de Polignac number, because 2497028581 - 2²⁹ = 1960157669 is a prime.

It is a super-2 number, since 2×2497028581² = 12470303468661747122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2497028587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1248514290 + 1248514291.

It is an arithmetic number, because the mean of its divisors is an integer number (1248514291).

Almost surely, 2^2497028581 is an apocalyptic number.

It is an amenable number.

2497028581 is a deficient number, since it is larger than the sum of its proper divisors (1).

2497028581 is an equidigital number, since it uses as much as digits as its factorization.

2497028581 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 322560, while the sum is 46.

The square root of 2497028581 is about 49970.2769754181. The cubic root of 2497028581 is about 1356.6708836492.

The spelling of 2497028581 in words is "two billion, four hundred ninety-seven million, twenty-eight thousand, five hundred eighty-one".