157245 has 16 divisors (see below), whose sum is σ = 274752. Its totient is φ = 76160.

The previous prime is 157243. The next prime is 157247. The reversal of 157245 is 542751.

It is an interprime number because it is at equal distance from previous prime (157243) and next prime (157247).

It is not a de Polignac number, because 157245 - 2¹ = 157243 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312 + ... + 641.

It is an arithmetic number, because the mean of its divisors is an integer number (17172).

2¹⁵⁷²⁴⁵ is an apocalyptic number.

157245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

157245 is a deficient number, since it is larger than the sum of its proper divisors (117507).

157245 is a wasteful number, since it uses less digits than its factorization.

157245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972.

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

The square root of 157245 is about 396.5412967145. The cubic root of 157245 is about 53.9749540916.

Adding to 157245 its reverse (542751), we get a palindrome (699996).

It can be divided in two parts, 15 and 7245, that added together give a triangular number (7260 = T₁₂₀).

The spelling of 157245 in words is "one hundred fifty-seven thousand, two hundred forty-five".