51862145 has 4 divisors (see below), whose sum is σ = 62234580. Its totient is φ = 41489712.

The previous prime is 51862133. The next prime is 51862177. The reversal of 51862145 is 54126815.

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

It can be written as a sum of positive squares in 2 ways, for example, as 19280881 + 32581264 = 4391^2 + 5708^2 .

It is a cyclic number.

It is not a de Polignac number, because 51862145 - 2¹⁶ = 51796609 is a prime.

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, 5186210 + ... + 5186219.

It is an arithmetic number, because the mean of its divisors is an integer number (15558645).

Almost surely, 2^51862145 is an apocalyptic number.

It is an amenable number.

51862145 is a deficient number, since it is larger than the sum of its proper divisors (10372435).

51862145 is a wasteful number, since it uses less digits than its factorization.

51862145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10372434.

The product of its digits is 9600, while the sum is 32.

The square root of 51862145 is about 7201.5376830230. The cubic root of 51862145 is about 372.9209870325.

The spelling of 51862145 in words is "fifty-one million, eight hundred sixty-two thousand, one hundred forty-five".