51540060 has 96 divisors (see below), whose sum is σ = 169569792. Its totient is φ = 11531520.

The previous prime is 51540053. The next prime is 51540061. The reversal of 51540060 is 6004515.

It is a happy number.

It is a super-3 number, since 3×51540060³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51540061) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 5577 + ... + 11583.

It is an arithmetic number, because the mean of its divisors is an integer number (1766352).

Almost surely, 2^51540060 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51540060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84784896).

51540060 is an abundant number, since it is smaller than the sum of its proper divisors (118029732).

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

51540060 is a wasteful number, since it uses less digits than its factorization.

51540060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6043 (or 6041 counting only the distinct ones).

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 51540060 is about 7179.1406170934. The cubic root of 51540060 is about 372.1473863891.

Adding to 51540060 its reverse (6004515), we get a palindrome (57544575).

The spelling of 51540060 in words is "fifty-one million, five hundred forty thousand, sixty".