51090060 has 96 divisors (see below), whose sum is σ = 165215232. Its totient is φ = 11554560.

The previous prime is 51090029. The next prime is 51090079. The reversal of 51090060 is 6009015.

It is a super-2 number, since 2×51090060² = 5220388461607200, which contains 22 as substring.

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

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 31 ways as a sum of consecutive naturals, for example, 42670 + ... + 43850.

It is an arithmetic number, because the mean of its divisors is an integer number (1720992).

Almost surely, 2^51090060 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 51090060, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82607616).

51090060 is an abundant number, since it is smaller than the sum of its proper divisors (114125172).

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

51090060 is a wasteful number, since it uses less digits than its factorization.

51090060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1303 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 270, while the sum is 21.

The square root of 51090060 is about 7147.7311085407. The cubic root of 51090060 is about 371.0611369182.

Adding to 51090060 its reverse (6009015), we get a palindrome (57099075).

The spelling of 51090060 in words is "fifty-one million, ninety thousand, sixty".