2506197 has 4 divisors (see below), whose sum is σ = 3341600. Its totient is φ = 1670796.

The previous prime is 2506193. The next prime is 2506199. The reversal of 2506197 is 7916052.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2506197 - 2² = 2506193 is a prime.

It is an Ulam number.

It is a D-number.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2506193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 417697 + ... + 417702.

It is an arithmetic number, because the mean of its divisors is an integer number (835400).

2^2506197 is an apocalyptic number.

It is an amenable number.

2506197 is a deficient number, since it is larger than the sum of its proper divisors (835403).

2506197 is an equidigital number, since it uses as much as digits as its factorization.

2506197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835402.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 2506197 is about 1583.0972806495. The cubic root of 2506197 is about 135.8329299380.

The spelling of 2506197 in words is "two million, five hundred six thousand, one hundred ninety-seven".