51140826 has 48 divisors (see below), whose sum is σ = 121631328. Its totient is φ = 15400800.

The previous prime is 51140819. The next prime is 51140827. The reversal of 51140826 is 62804115.

It is a self number, because there is not a number n which added to its sum of digits gives 51140826.

It is not an unprimeable number, because it can be changed into a prime (51140827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35125 + ... + 36551.

It is an arithmetic number, because the mean of its divisors is an integer number (2533986).

Almost surely, 2^51140826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51140826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60815664).

51140826 is an abundant number, since it is smaller than the sum of its proper divisors (70490502).

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

51140826 is a wasteful number, since it uses less digits than its factorization.

51140826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1627 (or 1624 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 51140826 is about 7151.2814236331. The cubic root of 51140826 is about 371.1839987420.

The spelling of 51140826 in words is "fifty-one million, one hundred forty thousand, eight hundred twenty-six".