51495086 has 4 divisors (see below), whose sum is σ = 77242632. Its totient is φ = 25747542.

The previous prime is 51495053. The next prime is 51495089. The reversal of 51495086 is 68059415.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51495089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12873770 + ... + 12873773.

It is an arithmetic number, because the mean of its divisors is an integer number (19310658).

Almost surely, 2^51495086 is an apocalyptic number.

51495086 is a deficient number, since it is larger than the sum of its proper divisors (25747546).

51495086 is a wasteful number, since it uses less digits than its factorization.

51495086 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25747545.

The product of its (nonzero) digits is 43200, while the sum is 38.

The square root of 51495086 is about 7176.0076644329. The cubic root of 51495086 is about 372.0391092732.

The spelling of 51495086 in words is "fifty-one million, four hundred ninety-five thousand, eighty-six".