51541685 has 16 divisors (see below), whose sum is σ = 68759040. Its totient is φ = 36832320.

The previous prime is 51541663. The next prime is 51541691. The reversal of 51541685 is 58614515.

It is a happy number.

It is not a de Polignac number, because 51541685 - 2⁸ = 51541429 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, 10775 + ... + 14804.

It is an arithmetic number, because the mean of its divisors is an integer number (4297440).

Almost surely, 2^51541685 is an apocalyptic number.

It is an amenable number.

51541685 is a deficient number, since it is larger than the sum of its proper divisors (17217355).

51541685 is a wasteful number, since it uses less digits than its factorization.

51541685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25628.

The product of its digits is 24000, while the sum is 35.

The square root of 51541685 is about 7179.2537913073. The cubic root of 51541685 is about 372.1512974772.

The spelling of 51541685 in words is "fifty-one million, five hundred forty-one thousand, six hundred eighty-five".