51402933 has 6 divisors (see below), whose sum is σ = 74248694. Its totient is φ = 34268616.

The previous prime is 51402881. The next prime is 51402973. The reversal of 51402933 is 33920415.

It can be written as a sum of positive squares in only one way, i.e., 36216324 + 15186609 = 6018^2 + 3897^2 .

It is not a de Polignac number, because 51402933 - 2¹⁴ = 51386549 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 51402897 and 51402906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51402973) 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 5 ways as a sum of consecutive naturals, for example, 2855710 + ... + 2855727.

Almost surely, 2^51402933 is an apocalyptic number.

It is an amenable number.

51402933 is a deficient number, since it is larger than the sum of its proper divisors (22845761).

51402933 is a wasteful number, since it uses less digits than its factorization.

51402933 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5711443 (or 5711440 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 51402933 is about 7169.5838791383. The cubic root of 51402933 is about 371.8170493037.

The spelling of 51402933 in words is "fifty-one million, four hundred two thousand, nine hundred thirty-three".