51012415 has 8 divisors (see below), whose sum is σ = 61506288. Its totient is φ = 40615680.

The previous prime is 51012407. The next prime is 51012419. The reversal of 51012415 is 51421015.

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

It is not a de Polignac number, because 51012415 - 2³ = 51012407 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51012392 and 51012401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51012419) 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, 23122 + ... + 25231.

It is an arithmetic number, because the mean of its divisors is an integer number (7688286).

Almost surely, 2^51012415 is an apocalyptic number.

51012415 is a deficient number, since it is larger than the sum of its proper divisors (10493873).

51012415 is a wasteful number, since it uses less digits than its factorization.

51012415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48569.

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 51012415 is about 7142.2975995124. The cubic root of 51012415 is about 370.8730660902.

The spelling of 51012415 in words is "fifty-one million, twelve thousand, four hundred fifteen".