51305337 has 24 divisors (see below), whose sum is σ = 79298856. Its totient is φ = 31850496.

The previous prime is 51305329. The next prime is 51305351. The reversal of 51305337 is 73350315.

It can be written as a sum of positive squares in 4 ways, for example, as 1687401 + 49617936 = 1299^2 + 7044^2 .

It is not a de Polignac number, because 51305337 - 2³ = 51305329 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51305337.

It is not an unprimeable number, because it can be changed into a prime (51305327) 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, 13113 + ... + 16569.

It is an arithmetic number, because the mean of its divisors is an integer number (3304119).

Almost surely, 2^51305337 is an apocalyptic number.

It is an amenable number.

51305337 is a deficient number, since it is larger than the sum of its proper divisors (27993519).

51305337 is a wasteful number, since it uses less digits than its factorization.

51305337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3577 (or 3574 counting only the distinct ones).

The product of its (nonzero) digits is 4725, while the sum is 27.

The square root of 51305337 is about 7162.7743926498. The cubic root of 51305337 is about 371.5815838363.

The spelling of 51305337 in words is "fifty-one million, three hundred five thousand, three hundred thirty-seven".