51049246 has 4 divisors (see below), whose sum is σ = 76573872. Its totient is φ = 25524622.

The previous prime is 51049241. The next prime is 51049289. The reversal of 51049246 is 64294015.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51049241) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12762310 + ... + 12762313.

It is an arithmetic number, because the mean of its divisors is an integer number (19143468).

Almost surely, 2^51049246 is an apocalyptic number.

51049246 is a deficient number, since it is larger than the sum of its proper divisors (25524626).

51049246 is a wasteful number, since it uses less digits than its factorization.

51049246 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25524625.

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 51049246 is about 7144.8755062632. The cubic root of 51049246 is about 370.9623014903.

The spelling of 51049246 in words is "fifty-one million, forty-nine thousand, two hundred forty-six".