51554532 has 24 divisors (see below), whose sum is σ = 120904000. Its totient is φ = 17097696.

The previous prime is 51554521. The next prime is 51554533. The reversal of 51554532 is 23545515.

It is a happy number.

It is a super-3 number, since 3×51554532³ (a number of 24 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 51554532.

It is not an unprimeable number, because it can be changed into a prime (51554533) 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 7 ways as a sum of consecutive naturals, for example, 8407 + ... + 13182.

Almost surely, 2^51554532 is an apocalyptic number.

It is an amenable number.

51554532 is an abundant number, since it is smaller than the sum of its proper divisors (69349468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51554532 is a wasteful number, since it uses less digits than its factorization.

51554532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21795 (or 21793 counting only the distinct ones).

The product of its digits is 15000, while the sum is 30.

The square root of 51554532 is about 7180.1484664316. The cubic root of 51554532 is about 372.1822150445.

The spelling of 51554532 in words is "fifty-one million, five hundred fifty-four thousand, five hundred thirty-two".