51612415 has 8 divisors (see below), whose sum is σ = 62003808. Its totient is φ = 41244000.

The previous prime is 51612409. The next prime is 51612461. The reversal of 51612415 is 51421615.

It is a happy number.

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

It is not a de Polignac number, because 51612415 - 2⁷ = 51612287 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51612415.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 336 + ... + 10165.

It is an arithmetic number, because the mean of its divisors is an integer number (7750476).

Almost surely, 2^51612415 is an apocalyptic number.

51612415 is a deficient number, since it is larger than the sum of its proper divisors (10391393).

51612415 is a wasteful number, since it uses less digits than its factorization.

51612415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11489.

The product of its digits is 1200, while the sum is 25.

The square root of 51612415 is about 7184.1781019126. The cubic root of 51612415 is about 372.3214525008.

The spelling of 51612415 in words is "fifty-one million, six hundred twelve thousand, four hundred fifteen".