51342394 has 16 divisors (see below), whose sum is σ = 80958528. Its totient is φ = 24372832.

The previous prime is 51342359. The next prime is 51342407. The reversal of 51342394 is 49324315.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2229 + ... + 10375.

It is an arithmetic number, because the mean of its divisors is an integer number (5059908).

Almost surely, 2^51342394 is an apocalyptic number.

51342394 is a deficient number, since it is larger than the sum of its proper divisors (29616134).

51342394 is a wasteful number, since it uses less digits than its factorization.

51342394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8309.

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

The square root of 51342394 is about 7165.3607027141. The cubic root of 51342394 is about 371.6710247254.

The spelling of 51342394 in words is "fifty-one million, three hundred forty-two thousand, three hundred ninety-four".