245172 has 12 divisors (see below), whose sum is σ = 572096. Its totient is φ = 81720.

The previous prime is 245171. The next prime is 245173. The reversal of 245172 is 271542.

It is an interprime number because it is at equal distance from previous prime (245171) and next prime (245173).

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10204 + ... + 10227.

2²⁴⁵¹⁷² is an apocalyptic number.

It is an amenable number.

245172 is an abundant number, since it is smaller than the sum of its proper divisors (326924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

245172 is a wasteful number, since it uses less digits than its factorization.

245172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20438 (or 20436 counting only the distinct ones).

The product of its digits is 560, while the sum is 21.

The square root of 245172 is about 495.1484625847. The cubic root of 245172 is about 62.5878870227.

The spelling of 245172 in words is "two hundred forty-five thousand, one hundred seventy-two".