51869523 has 8 divisors (see below), whose sum is σ = 71028688. Its totient is φ = 33645024.

The previous prime is 51869507. The next prime is 51869527. The reversal of 51869523 is 32596815.

51869523 is nontrivially palindromic in base 4.

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

It is not a de Polignac number, because 51869523 - 2⁴ = 51869507 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51869527) 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, 233536 + ... + 233757.

It is an arithmetic number, because the mean of its divisors is an integer number (8878586).

Almost surely, 2^51869523 is an apocalyptic number.

51869523 is a deficient number, since it is larger than the sum of its proper divisors (19159165).

51869523 is a wasteful number, since it uses less digits than its factorization.

51869523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467333.

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

The square root of 51869523 is about 7202.0499165168. The cubic root of 51869523 is about 372.9386703259.

The spelling of 51869523 in words is "fifty-one million, eight hundred sixty-nine thousand, five hundred twenty-three".