51582492 has 72 divisors (see below), whose sum is σ = 147834960. Its totient is φ = 15033600.

The previous prime is 51582463. The next prime is 51582527. The reversal of 51582492 is 29428515.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5992 + ... + 11792.

Almost surely, 2^51582492 is an apocalyptic number.

51582492 is a gapful number since it is divisible by the number (52) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51582492, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73917480).

51582492 is an abundant number, since it is smaller than the sum of its proper divisors (96252468).

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

51582492 is a wasteful number, since it uses less digits than its factorization.

51582492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5843 (or 5838 counting only the distinct ones).

The product of its digits is 28800, while the sum is 36.

The square root of 51582492 is about 7182.0952374638. The cubic root of 51582492 is about 372.2494857814.

The spelling of 51582492 in words is "fifty-one million, five hundred eighty-two thousand, four hundred ninety-two".