157851 has 6 divisors (see below), whose sum is σ = 228020. Its totient is φ = 105228.

The previous prime is 157841. The next prime is 157867. The reversal of 157851 is 158751.

157851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-157851 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a nialpdrome in base 11.

It is not an unprimeable number, because it can be changed into a prime (157831) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8761 + ... + 8778.

2¹⁵⁷⁸⁵¹ is an apocalyptic number.

157851 is a deficient number, since it is larger than the sum of its proper divisors (70169).

157851 is a wasteful number, since it uses less digits than its factorization.

157851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17545 (or 17542 counting only the distinct ones).

The product of its digits is 1400, while the sum is 27.

The square root of 157851 is about 397.3046689884. The cubic root of 157851 is about 54.0442024907.

Subtracting 157851 from its reverse (158751), we obtain a square (900 = 30²).

The spelling of 157851 in words is "one hundred fifty-seven thousand, eight hundred fifty-one".