51499995 has 8 divisors (see below), whose sum is σ = 82400016. Its totient is φ = 27466656.

The previous prime is 51499963. The next prime is 51499997. The reversal of 51499995 is 59999415.

It is a happy number.

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

It is not a de Polignac number, because 51499995 - 2⁵ = 51499963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51499997) 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, 1716652 + ... + 1716681.

It is an arithmetic number, because the mean of its divisors is an integer number (10300002).

Almost surely, 2^51499995 is an apocalyptic number.

51499995 is a deficient number, since it is larger than the sum of its proper divisors (30900021).

51499995 is a wasteful number, since it uses less digits than its factorization.

51499995 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433341.

The product of its digits is 656100, while the sum is 51.

The square root of 51499995 is about 7176.3496988371. The cubic root of 51499995 is about 372.0509309964.

The spelling of 51499995 in words is "fifty-one million, four hundred ninety-nine thousand, nine hundred ninety-five".