51149338 has 4 divisors (see below), whose sum is σ = 76724010. Its totient is φ = 25574668.

The previous prime is 51149327. The next prime is 51149339. The reversal of 51149338 is 83394115.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38850289 + 12299049 = 6233^2 + 3507^2 .

It is not an unprimeable number, because it can be changed into a prime (51149339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12787333 + ... + 12787336.

Almost surely, 2^51149338 is an apocalyptic number.

51149338 is a deficient number, since it is larger than the sum of its proper divisors (25574672).

51149338 is a wasteful number, since it uses less digits than its factorization.

51149338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25574671.

The product of its digits is 12960, while the sum is 34.

The square root of 51149338 is about 7151.8765369657. The cubic root of 51149338 is about 371.2045911804.

The spelling of 51149338 in words is "fifty-one million, one hundred forty-nine thousand, three hundred thirty-eight".