51271738 has 48 divisors (see below), whose sum is σ = 95705280. Its totient is φ = 20529432.

The previous prime is 51271733. The next prime is 51271789. The reversal of 51271738 is 83717215.

It is a super-2 number, since 2×51271738² = 5257582235081288, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51271733) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1192345 + ... + 1192387.

It is an arithmetic number, because the mean of its divisors is an integer number (1993860).

Almost surely, 2^51271738 is an apocalyptic number.

51271738 is a deficient number, since it is larger than the sum of its proper divisors (44433542).

51271738 is an equidigital number, since it uses as much as digits as its factorization.

51271738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 75 counting only the distinct ones).

The product of its digits is 11760, while the sum is 34.

The square root of 51271738 is about 7160.4286184557. The cubic root of 51271738 is about 371.5004519521.

The spelling of 51271738 in words is "fifty-one million, two hundred seventy-one thousand, seven hundred thirty-eight".