51249433 has 8 divisors (see below), whose sum is σ = 52634880. Its totient is φ = 49882560.

The previous prime is 51249391. The next prime is 51249503. The reversal of 51249433 is 33494215.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51249433 - 2¹³ = 51241241 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51249395 and 51249404.

It is not an unprimeable number, because it can be changed into a prime (51249533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1041 + ... + 10177.

It is an arithmetic number, because the mean of its divisors is an integer number (6579360).

Almost surely, 2^51249433 is an apocalyptic number.

It is an amenable number.

51249433 is a deficient number, since it is larger than the sum of its proper divisors (1385447).

51249433 is an equidigital number, since it uses as much as digits as its factorization.

51249433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9287.

The product of its digits is 12960, while the sum is 31.

The square root of 51249433 is about 7158.8709305309. The cubic root of 51249433 is about 371.4465722397.

The spelling of 51249433 in words is "fifty-one million, two hundred forty-nine thousand, four hundred thirty-three".