51523245399 has 8 divisors (see below), whose sum is σ = 68739890560. Its totient is φ = 34327715256.

The previous prime is 51523245379. The next prime is 51523245401. The reversal of 51523245399 is 99354232515.

It is a happy number.

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

It is not a de Polignac number, because 51523245399 - 2¹⁶ = 51523179863 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 (51523245359) 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, 5273059 + ... + 5282820.

It is an arithmetic number, because the mean of its divisors is an integer number (8592486320).

Almost surely, 2^51523245399 is an apocalyptic number.

51523245399 is a deficient number, since it is larger than the sum of its proper divisors (17216645161).

51523245399 is a wasteful number, since it uses less digits than its factorization.

51523245399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10557509.

The product of its digits is 1458000, while the sum is 48.

The spelling of 51523245399 in words is "fifty-one billion, five hundred twenty-three million, two hundred forty-five thousand, three hundred ninety-nine".