51225716 has 24 divisors (see below), whose sum is σ = 93471840. Its totient is φ = 24533600.

The previous prime is 51225703. The next prime is 51225731. The reversal of 51225716 is 61752215.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 13511 + ... + 16881.

It is an arithmetic number, because the mean of its divisors is an integer number (3894660).

Almost surely, 2^51225716 is an apocalyptic number.

It is an amenable number.

51225716 is a deficient number, since it is larger than the sum of its proper divisors (42246124).

51225716 is a wasteful number, since it uses less digits than its factorization.

51225716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3535 (or 3533 counting only the distinct ones).

The product of its digits is 4200, while the sum is 29.

The square root of 51225716 is about 7157.2142625466. The cubic root of 51225716 is about 371.3892645640.

The spelling of 51225716 in words is "fifty-one million, two hundred twenty-five thousand, seven hundred sixteen".