51541787 has 8 divisors (see below), whose sum is σ = 58166640. Its totient is φ = 45240160.

The previous prime is 51541783. The next prime is 51541799. The reversal of 51541787 is 78714515.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51541787 - 2² = 51541783 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51541787.

It is not an unprimeable number, because it can be changed into a prime (51541783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80468 + ... + 81105.

It is an arithmetic number, because the mean of its divisors is an integer number (7270830).

Almost surely, 2^51541787 is an apocalyptic number.

51541787 is a deficient number, since it is larger than the sum of its proper divisors (6624853).

51541787 is a wasteful number, since it uses less digits than its factorization.

51541787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161613.

The product of its digits is 39200, while the sum is 38.

The square root of 51541787 is about 7179.2608951061. The cubic root of 51541787 is about 372.1515429705.

The spelling of 51541787 in words is "fifty-one million, five hundred forty-one thousand, seven hundred eighty-seven".