51498479 has 4 divisors (see below), whose sum is σ = 51786360. Its totient is φ = 51210600.

The previous prime is 51498451. The next prime is 51498481. The reversal of 51498479 is 97489415.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97489415 = 5 ⋅19497883.

It is a cyclic number.

It is not a de Polignac number, because 51498479 - 2²⁴ = 34721263 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51498439) 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, 143672 + ... + 144029.

It is an arithmetic number, because the mean of its divisors is an integer number (12946590).

Almost surely, 2^51498479 is an apocalyptic number.

51498479 is a deficient number, since it is larger than the sum of its proper divisors (287881).

51498479 is a wasteful number, since it uses less digits than its factorization.

51498479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287880.

The product of its digits is 362880, while the sum is 47.

The square root of 51498479 is about 7176.2440733297. The cubic root of 51498479 is about 372.0472802857.

The spelling of 51498479 in words is "fifty-one million, four hundred ninety-eight thousand, four hundred seventy-nine".