51263995 has 8 divisors (see below), whose sum is σ = 64754640. Its totient is φ = 38852640.

The previous prime is 51263963. The next prime is 51263999. The reversal of 51263995 is 59936215.

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 51263995 - 2⁵ = 51263963 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51263999) 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, 269716 + ... + 269905.

It is an arithmetic number, because the mean of its divisors is an integer number (8094330).

Almost surely, 2^51263995 is an apocalyptic number.

51263995 is a deficient number, since it is larger than the sum of its proper divisors (13490645).

51263995 is a wasteful number, since it uses less digits than its factorization.

51263995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539645.

The product of its digits is 72900, while the sum is 40.

The square root of 51263995 is about 7159.8879181172. The cubic root of 51263995 is about 371.4817498176.

The spelling of 51263995 in words is "fifty-one million, two hundred sixty-three thousand, nine hundred ninety-five".