245157 has 32 divisors (see below), whose sum is σ = 414720. Its totient is φ = 126720.

The previous prime is 245149. The next prime is 245171. The reversal of 245157 is 751542.

245157 is a nontrivial binomial coefficient, being equal to C(23, 7).

It is not a de Polignac number, because 245157 - 2³ = 245149 is a prime.

It is an Ulam number.

245157 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245107) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10648 + ... + 10670.

It is an arithmetic number, because the mean of its divisors is an integer number (12960).

245157 is a Friedman number, since it can be written as 51*(5+7^4*2), using all its digits and the basic arithmetic operations.

2²⁴⁵¹⁵⁷ is an apocalyptic number.

It is an amenable number.

245157 is a deficient number, since it is larger than the sum of its proper divisors (169563).

245157 is a wasteful number, since it uses less digits than its factorization.

245157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73.

The product of its digits is 1400, while the sum is 24.

The square root of 245157 is about 495.1333153808. The cubic root of 245157 is about 62.5866105889.

Adding to 245157 its reverse (751542), we get a palindrome (996699).

The spelling of 245157 in words is "two hundred forty-five thousand, one hundred fifty-seven".