51133433 has 16 divisors (see below), whose sum is σ = 59277456. Its totient is φ = 43683840.

The previous prime is 51133429. The next prime is 51133441. The reversal of 51133433 is 33433115.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 12730624 + 38402809 = 3568^2 + 6197^2 .

It is a cyclic number.

It is not a de Polignac number, because 51133433 - 2² = 51133429 is a prime.

It is a super-2 number, since 2×51133433² = 5229255940730978, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51133399 and 51133408.

It is not an unprimeable number, because it can be changed into a prime (51133463) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11585 + ... + 15377.

It is an arithmetic number, because the mean of its divisors is an integer number (3704841).

Almost surely, 2^51133433 is an apocalyptic number.

It is an amenable number.

51133433 is a deficient number, since it is larger than the sum of its proper divisors (8144023).

51133433 is a wasteful number, since it uses less digits than its factorization.

51133433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3884.

The product of its digits is 1620, while the sum is 23.

The square root of 51133433 is about 7150.7645045827. The cubic root of 51133433 is about 371.1661115616.

Adding to 51133433 its reverse (33433115), we get a palindrome (84566548).

The spelling of 51133433 in words is "fifty-one million, one hundred thirty-three thousand, four hundred thirty-three".