51335425 has 24 divisors (see below), whose sum is σ = 67388544. Its totient is φ = 38712960.

The previous prime is 51335413. The next prime is 51335437. The reversal of 51335425 is 52453315.

It is an interprime number because it is at equal distance from previous prime (51335413) and next prime (51335437).

It is not a de Polignac number, because 51335425 - 2¹¹ = 51333377 is a prime.

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51335393 and 51335402.

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, 41364 + ... + 42586.

It is an arithmetic number, because the mean of its divisors is an integer number (2807856).

Almost surely, 2^51335425 is an apocalyptic number.

It is an amenable number.

51335425 is a deficient number, since it is larger than the sum of its proper divisors (16053119).

51335425 is a wasteful number, since it uses less digits than its factorization.

51335425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1329 (or 1324 counting only the distinct ones).

The product of its digits is 9000, while the sum is 28.

The square root of 51335425 is about 7164.8743882918. The cubic root of 51335425 is about 371.6542076121.

The spelling of 51335425 in words is "fifty-one million, three hundred thirty-five thousand, four hundred twenty-five".