51883209 has 27 divisors (see below), whose sum is σ = 87432813. Its totient is φ = 29647548.

The previous prime is 51883199. The next prime is 51883211. The reversal of 51883209 is 90238815.

The square root of 51883209 is 7203.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 51883209 - 2⁵ = 51883177 is a prime.

It is a super-2 number, since 2×51883209² = 5383734752275362, which contains 22 as substring.

It is a nialpdrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (51888209) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 7411884 + ... + 7411890.

Almost surely, 2^51883209 is an apocalyptic number.

51883209 is the 7203-rd square number.

51883209 is the 3602-nd centered octagonal number.

It is an amenable number.

51883209 is a deficient number, since it is larger than the sum of its proper divisors (35549604).

51883209 is an frugal number, since it uses more digits than its factorization.

51883209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62 (or 10 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 36.

The cubic root of 51883209 is about 372.9714679400.

Multiplying 51883209 by its sum of digits (36), we get a square (1867795524 = 43218²).

The spelling of 51883209 in words is "fifty-one million, eight hundred eighty-three thousand, two hundred nine".