51402043 has 8 divisors (see below), whose sum is σ = 64085760. Its totient is φ = 40053480.

The previous prime is 51402041. The next prime is 51402187. The reversal of 51402043 is 34020415.

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 51402043 - 2¹ = 51402041 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51402043.

It is not an unprimeable number, because it can be changed into a prime (51402041) 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, 333703 + ... + 333856.

It is an arithmetic number, because the mean of its divisors is an integer number (8010720).

Almost surely, 2^51402043 is an apocalyptic number.

51402043 is a deficient number, since it is larger than the sum of its proper divisors (12683717).

51402043 is a wasteful number, since it uses less digits than its factorization.

51402043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 667577.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 51402043 is about 7169.5218111113. The cubic root of 51402043 is about 371.8149033880.

Adding to 51402043 its reverse (34020415), we get a palindrome (85422458).

The spelling of 51402043 in words is "fifty-one million, four hundred two thousand, forty-three".