51669532 has 12 divisors (see below), whose sum is σ = 93539880. Its totient is φ = 24943856.

The previous prime is 51669521. The next prime is 51669539. The reversal of 51669532 is 23596615.

It is a junction number, because it is equal to n+sod(n) for n = 51669491 and 51669500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51669539) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222598 + ... + 222829.

It is an arithmetic number, because the mean of its divisors is an integer number (7794990).

Almost surely, 2^51669532 is an apocalyptic number.

It is an amenable number.

51669532 is a deficient number, since it is larger than the sum of its proper divisors (41870348).

51669532 is a wasteful number, since it uses less digits than its factorization.

51669532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 445460 (or 445458 counting only the distinct ones).

The product of its digits is 48600, while the sum is 37.

The square root of 51669532 is about 7188.1521964967. The cubic root of 51669532 is about 372.4587453373.

The spelling of 51669532 in words is "fifty-one million, six hundred sixty-nine thousand, five hundred thirty-two".