51207616 has 14 divisors (see below), whose sum is σ = 101615240. Its totient is φ = 25603776.

The previous prime is 51207613. The next prime is 51207617. The reversal of 51207616 is 61670215.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51207613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 399996 + ... + 400123.

Almost surely, 2^51207616 is an apocalyptic number.

It is an amenable number.

51207616 is a deficient number, since it is larger than the sum of its proper divisors (50407624).

51207616 is an equidigital number, since it uses as much as digits as its factorization.

51207616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 800131 (or 800121 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 51207616 is about 7155.9496923888. The cubic root of 51207616 is about 371.3455174119.

The spelling of 51207616 in words is "fifty-one million, two hundred seven thousand, six hundred sixteen".