51023299 has 4 divisors (see below), whose sum is σ = 51040080. Its totient is φ = 51006520.

The previous prime is 51023293. The next prime is 51023309. The reversal of 51023299 is 99232015.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99232015 = 5 ⋅19846403.

It is a cyclic number.

It is not a de Polignac number, because 51023299 - 2¹⁹ = 50499011 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51023299.

It is not an unprimeable number, because it can be changed into a prime (51023293) 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, 2407 + ... + 10384.

It is an arithmetic number, because the mean of its divisors is an integer number (12760020).

Almost surely, 2^51023299 is an apocalyptic number.

51023299 is a deficient number, since it is larger than the sum of its proper divisors (16781).

51023299 is a wasteful number, since it uses less digits than its factorization.

51023299 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16780.

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 51023299 is about 7143.0594985622. The cubic root of 51023299 is about 370.8994406855.

The spelling of 51023299 in words is "fifty-one million, twenty-three thousand, two hundred ninety-nine".