51963740 has 24 divisors (see below), whose sum is σ = 109326672. Its totient is φ = 20746880.

The previous prime is 51963731. The next prime is 51963763. The reversal of 51963740 is 4736915.

It is a self number, because there is not a number n which added to its sum of digits gives 51963740.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10235 + ... + 14445.

It is an arithmetic number, because the mean of its divisors is an integer number (4555278).

Almost surely, 2^51963740 is an apocalyptic number.

It is an amenable number.

51963740 is an abundant number, since it is smaller than the sum of its proper divisors (57362932).

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

51963740 is a wasteful number, since it uses less digits than its factorization.

51963740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837 (or 4835 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 51963740 is about 7208.5879338467. The cubic root of 51963740 is about 373.1643385504.

The spelling of 51963740 in words is "fifty-one million, nine hundred sixty-three thousand, seven hundred forty".