97851 has 12 divisors (see below), whose sum is σ = 142008. Its totient is φ = 59904.

The previous prime is 97849. The next prime is 97859. The reversal of 97851 is 15879.

97851 is nontrivially palindromic in base 11.

It is not a de Polignac number, because 97851 - 2¹ = 97849 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 97851.

It is not an unprimeable number, because it can be changed into a prime (97859) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 411 + ... + 603.

It is an arithmetic number, because the mean of its divisors is an integer number (11834).

2⁹⁷⁸⁵¹ is an apocalyptic number.

97851 is a deficient number, since it is larger than the sum of its proper divisors (44157).

97851 is a wasteful number, since it uses less digits than its factorization.

97851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 222 (or 209 counting only the distinct ones).

The product of its digits is 2520, while the sum is 30.

The square root of 97851 is about 312.8114448034. The cubic root of 97851 is about 46.0809852521.

The spelling of 97851 in words is "ninety-seven thousand, eight hundred fifty-one".