51533412 has 24 divisors (see below), whose sum is σ = 137422656. Its totient is φ = 14723808.

The previous prime is 51533389. The next prime is 51533429. The reversal of 51533412 is 21433515.

It is an unprimeable number.

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, 306663 + ... + 306830.

It is an arithmetic number, because the mean of its divisors is an integer number (5725944).

Almost surely, 2^51533412 is an apocalyptic number.

It is an amenable number.

51533412 is an abundant number, since it is smaller than the sum of its proper divisors (85889244).

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

51533412 is a wasteful number, since it uses less digits than its factorization.

51533412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 613507 (or 613505 counting only the distinct ones).

The product of its digits is 1800, while the sum is 24.

The square root of 51533412 is about 7178.6775940977. The cubic root of 51533412 is about 372.1313849706.

Adding to 51533412 its reverse (21433515), we get a palindrome (72966927).

The spelling of 51533412 in words is "fifty-one million, five hundred thirty-three thousand, four hundred twelve".