5251997 has 8 divisors (see below), whose sum is σ = 5585400. Its totient is φ = 4938432.

The previous prime is 5251951. The next prime is 5252011. The reversal of 5251997 is 7991525.

It can be written as a sum of positive squares in 4 ways, for example, as 900601 + 4351396 = 949^2 + 2086^2 .

It is not a de Polignac number, because 5251997 - 2⁶ = 5251933 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 5251997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5251097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4379 + ... + 5447.

It is an arithmetic number, because the mean of its divisors is an integer number (698175).

Almost surely, 2^5251997 is an apocalyptic number.

It is an amenable number.

5251997 is a deficient number, since it is larger than the sum of its proper divisors (333403).

5251997 is an equidigital number, since it uses as much as digits as its factorization.

5251997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1120 (or 1086 counting only the distinct ones).

The product of its digits is 28350, while the sum is 38.

The square root of 5251997 is about 2291.7235871719. The cubic root of 5251997 is about 173.8233663562.

The spelling of 5251997 in words is "five million, two hundred fifty-one thousand, nine hundred ninety-seven".