51782015 has 16 divisors (see below), whose sum is σ = 63866880. Its totient is φ = 40284960.

The previous prime is 51782009. The next prime is 51782047. The reversal of 51782015 is 51028715.

It is not a de Polignac number, because 51782015 - 2¹² = 51777919 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41450 + ... + 42680.

It is an arithmetic number, because the mean of its divisors is an integer number (3991680).

Almost surely, 2^51782015 is an apocalyptic number.

51782015 is a deficient number, since it is larger than the sum of its proper divisors (12084865).

51782015 is a wasteful number, since it uses less digits than its factorization.

51782015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462.

The product of its (nonzero) digits is 2800, while the sum is 29.

The square root of 51782015 is about 7195.9721372446. The cubic root of 51782015 is about 372.7288265668.

The spelling of 51782015 in words is "fifty-one million, seven hundred eighty-two thousand, fifteen".