51402093 has 8 divisors (see below), whose sum is σ = 68572608. Its totient is φ = 34249824.

The previous prime is 51402041. The next prime is 51402187. The reversal of 51402093 is 39020415.

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

It is not a de Polignac number, because 51402093 - 2¹⁷ = 51271021 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51402193) 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, 4705 + ... + 11177.

It is an arithmetic number, because the mean of its divisors is an integer number (8571576).

Almost surely, 2^51402093 is an apocalyptic number.

It is an amenable number.

51402093 is a deficient number, since it is larger than the sum of its proper divisors (17170515).

51402093 is a wasteful number, since it uses less digits than its factorization.

51402093 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9123.

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 51402093 is about 7169.5252980933. The cubic root of 51402093 is about 371.8150239457.

The spelling of 51402093 in words is "fifty-one million, four hundred two thousand, ninety-three".