51492 has 24 divisors (see below), whose sum is σ = 137536. Its totient is φ = 14688.

The previous prime is 51487. The next prime is 51503. The reversal of 51492 is 29415.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a plaindrome in base 8.

It is an unprimeable number.

51492 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223 + ... + 390.

2⁵¹⁴⁹² is an apocalyptic number.

It is an amenable number.

51492 is an abundant number, since it is smaller than the sum of its proper divisors (86044).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68768).

51492 is a wasteful number, since it uses less digits than its factorization.

51492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 625 counting only the distinct ones).

The product of its digits is 360, while the sum is 21.

The square root of 51492 is about 226.9184875677. The cubic root of 51492 is about 37.2031677265.

It can be divided in two parts, 5149 and 2, that added together give a triangular number (5151 = T₁₀₁).

The spelling of 51492 in words is "fifty-one thousand, four hundred ninety-two".