51154899 has 8 divisors (see below), whose sum is σ = 68832720. Its totient is φ = 33790176.

The previous prime is 51154891. The next prime is 51154931. The reversal of 51154899 is 99845115.

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

It is not a de Polignac number, because 51154899 - 2³ = 51154891 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51154899.

It is not an unprimeable number, because it can be changed into a prime (51154891) 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, 77892 + ... + 78545.

It is an arithmetic number, because the mean of its divisors is an integer number (8604090).

Almost surely, 2^51154899 is an apocalyptic number.

51154899 is a deficient number, since it is larger than the sum of its proper divisors (17677821).

51154899 is a wasteful number, since it uses less digits than its factorization.

51154899 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156549.

The product of its digits is 64800, while the sum is 42.

The square root of 51154899 is about 7152.2653054819. The cubic root of 51154899 is about 371.2180432537.

The spelling of 51154899 in words is "fifty-one million, one hundred fifty-four thousand, eight hundred ninety-nine".