51813093 has 16 divisors (see below), whose sum is σ = 73293120. Its totient is φ = 32445696.

The previous prime is 51813077. The next prime is 51813107. The reversal of 51813093 is 39031815.

It is a happy number.

It is not a de Polignac number, because 51813093 - 2⁴ = 51813077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51813093.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51813023) 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, 50338 + ... + 51356.

It is an arithmetic number, because the mean of its divisors is an integer number (4580820).

Almost surely, 2^51813093 is an apocalyptic number.

It is an amenable number.

51813093 is a deficient number, since it is larger than the sum of its proper divisors (21480027).

51813093 is a wasteful number, since it uses less digits than its factorization.

51813093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2036.

The product of its (nonzero) digits is 3240, while the sum is 30.

The square root of 51813093 is about 7198.1312158087. The cubic root of 51813093 is about 372.8033785122.

The spelling of 51813093 in words is "fifty-one million, eight hundred thirteen thousand, ninety-three".