51567145 has 16 divisors (see below), whose sum is σ = 72057600. Its totient is φ = 34691904.

The previous prime is 51567107. The next prime is 51567149. The reversal of 51567145 is 54176515.

It is a cyclic number.

It is not a de Polignac number, because 51567145 - 2⁹ = 51566633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51567145.

It is not an unprimeable number, because it can be changed into a prime (51567149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12045 + ... + 15754.

It is an arithmetic number, because the mean of its divisors is an integer number (4503600).

Almost surely, 2^51567145 is an apocalyptic number.

It is an amenable number.

51567145 is a deficient number, since it is larger than the sum of its proper divisors (20490455).

51567145 is a wasteful number, since it uses less digits than its factorization.

51567145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27864.

The product of its digits is 21000, while the sum is 34.

The square root of 51567145 is about 7181.0267371735. The cubic root of 51567145 is about 372.2125644714.

The spelling of 51567145 in words is "fifty-one million, five hundred sixty-seven thousand, one hundred forty-five".