51346746 has 48 divisors (see below), whose sum is σ = 122148000. Its totient is φ = 15459360.

The previous prime is 51346727. The next prime is 51346829. The reversal of 51346746 is 64764315.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 51346746.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33505 + ... + 35003.

It is an arithmetic number, because the mean of its divisors is an integer number (2544750).

Almost surely, 2^51346746 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 51346746, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61074000).

51346746 is an abundant number, since it is smaller than the sum of its proper divisors (70801254).

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

51346746 is a wasteful number, since it uses less digits than its factorization.

51346746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1691 (or 1688 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 51346746 is about 7165.6643795255. The cubic root of 51346746 is about 371.6815259017.

Subtracting 51346746 from its reverse (64764315), we obtain a square (13417569 = 3663²).

The spelling of 51346746 in words is "fifty-one million, three hundred forty-six thousand, seven hundred forty-six".