51742258 has 8 divisors (see below), whose sum is σ = 77703552. Its totient is φ = 25841076.

The previous prime is 51742241. The next prime is 51742261. The reversal of 51742258 is 85224715.

It is a happy number.

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

It is a super-2 number, since 2×51742258² = 5354522525877128, which contains 22 as substring.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 12810 + ... + 16357.

It is an arithmetic number, because the mean of its divisors is an integer number (9712944).

Almost surely, 2^51742258 is an apocalyptic number.

51742258 is a deficient number, since it is larger than the sum of its proper divisors (25961294).

51742258 is a wasteful number, since it uses less digits than its factorization.

51742258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30056.

The product of its digits is 22400, while the sum is 34.

The square root of 51742258 is about 7193.2091586440. The cubic root of 51742258 is about 372.6334113663.

The spelling of 51742258 in words is "fifty-one million, seven hundred forty-two thousand, two hundred fifty-eight".