51122415 has 8 divisors (see below), whose sum is σ = 81795888. Its totient is φ = 27265280.

The previous prime is 51122413. The next prime is 51122437. The reversal of 51122415 is 51422115.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51122415 - 2¹ = 51122413 is a prime.

It is a super-2 number, since 2×51122415² = 5227002630864450, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 51122391 and 51122400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51122413) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1704066 + ... + 1704095.

It is an arithmetic number, because the mean of its divisors is an integer number (10224486).

Almost surely, 2^51122415 is an apocalyptic number.

51122415 is a deficient number, since it is larger than the sum of its proper divisors (30673473).

51122415 is a wasteful number, since it uses less digits than its factorization.

51122415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3408169.

The product of its digits is 400, while the sum is 21.

The square root of 51122415 is about 7149.9940559416. The cubic root of 51122415 is about 371.1394505837.

The spelling of 51122415 in words is "fifty-one million, one hundred twenty-two thousand, four hundred fifteen".