51065415 has 12 divisors (see below), whose sum is σ = 88513464. Its totient is φ = 27234864.

The previous prime is 51065411. The next prime is 51065423. The reversal of 51065415 is 51456015.

It is a happy number.

51065415 is a `hidden beast` number, since 5 + 1 + 0 + 654 + 1 + 5 = 666.

It is not a de Polignac number, because 51065415 - 2² = 51065411 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51065411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 567349 + ... + 567438.

It is an arithmetic number, because the mean of its divisors is an integer number (7376122).

Almost surely, 2^51065415 is an apocalyptic number.

51065415 is a deficient number, since it is larger than the sum of its proper divisors (37448049).

51065415 is a wasteful number, since it uses less digits than its factorization.

51065415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1134798 (or 1134795 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 27.

The square root of 51065415 is about 7146.0069269488. The cubic root of 51065415 is about 371.0014627367.

The spelling of 51065415 in words is "fifty-one million, sixty-five thousand, four hundred fifteen".