51140499 has 4 divisors (see below), whose sum is σ = 68187336. Its totient is φ = 34093664.

The previous prime is 51140491. The next prime is 51140563. The reversal of 51140499 is 99404115.

51140499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 51140499 - 2³ = 51140491 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51140491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8523414 + ... + 8523419.

It is an arithmetic number, because the mean of its divisors is an integer number (17046834).

Almost surely, 2^51140499 is an apocalyptic number.

51140499 is a deficient number, since it is larger than the sum of its proper divisors (17046837).

51140499 is a wasteful number, since it uses less digits than its factorization.

51140499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17046836.

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 51140499 is about 7151.2585605612. The cubic root of 51140499 is about 371.1832076101.

The spelling of 51140499 in words is "fifty-one million, one hundred forty thousand, four hundred ninety-nine".