51146015 has 4 divisors (see below), whose sum is σ = 61375224. Its totient is φ = 40916808.

The previous prime is 51145993. The next prime is 51146021. The reversal of 51146015 is 51064115.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 51146015 - 2¹⁰ = 51144991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5114597 + ... + 5114606.

It is an arithmetic number, because the mean of its divisors is an integer number (15343806).

Almost surely, 2^51146015 is an apocalyptic number.

51146015 is a deficient number, since it is larger than the sum of its proper divisors (10229209).

51146015 is a wasteful number, since it uses less digits than its factorization.

51146015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10229208.

The product of its (nonzero) digits is 600, while the sum is 23.

The square root of 51146015 is about 7151.6442165421. The cubic root of 51146015 is about 371.1965523695.

The spelling of 51146015 in words is "fifty-one million, one hundred forty-six thousand, fifteen".