51492459 has 4 divisors (see below), whose sum is σ = 68656616. Its totient is φ = 34328304.

The previous prime is 51492443. The next prime is 51492491. The reversal of 51492459 is 95429415.

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

It is not a de Polignac number, because 51492459 - 2⁴ = 51492443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51492499) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8582074 + ... + 8582079.

It is an arithmetic number, because the mean of its divisors is an integer number (17164154).

Almost surely, 2^51492459 is an apocalyptic number.

51492459 is a deficient number, since it is larger than the sum of its proper divisors (17164157).

51492459 is a wasteful number, since it uses less digits than its factorization.

51492459 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17164156.

The product of its digits is 64800, while the sum is 39.

The square root of 51492459 is about 7175.8246216027. The cubic root of 51492459 is about 372.0327826931.

The spelling of 51492459 in words is "fifty-one million, four hundred ninety-two thousand, four hundred fifty-nine".