2261250157 has 2 divisors, whose sum is σ = 2261250158. Its totient is φ = 2261250156.

The previous prime is 2261250151. The next prime is 2261250179. The reversal of 2261250157 is 7510521622.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1410302916 + 850947241 = 37554^2 + 29171^2 .

It is a cyclic number.

It is not a de Polignac number, because 2261250157 - 2¹⁹ = 2260725869 is a prime.

It is a super-2 number, since 2×2261250157² = 10226504545065049298, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2261250151) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1130625078 + 1130625079.

It is an arithmetic number, because the mean of its divisors is an integer number (1130625079).

Almost surely, 2^2261250157 is an apocalyptic number.

It is an amenable number.

2261250157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2261250157 is an equidigital number, since it uses as much as digits as its factorization.

2261250157 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8400, while the sum is 31.

The square root of 2261250157 is about 47552.6041032455. The cubic root of 2261250157 is about 1312.5510488021.

Adding to 2261250157 its reverse (7510521622), we get a palindrome (9771771779).

The spelling of 2261250157 in words is "two billion, two hundred sixty-one million, two hundred fifty thousand, one hundred fifty-seven".