47251986 has 8 divisors (see below), whose sum is σ = 94503984. Its totient is φ = 15750660.

The previous prime is 47251943. The next prime is 47251987. The reversal of 47251986 is 68915274.

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

47251986 is an admirable number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47251987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3937660 + ... + 3937671.

It is an arithmetic number, because the mean of its divisors is an integer number (11812998).

Almost surely, 2^47251986 is an apocalyptic number.

47251986 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47251986 is a wasteful number, since it uses less digits than its factorization.

47251986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7875336.

The product of its digits is 120960, while the sum is 42.

The square root of 47251986 is about 6874.0080011591. The cubic root of 47251986 is about 361.5264046797.

The spelling of 47251986 in words is "forty-seven million, two hundred fifty-one thousand, nine hundred eighty-six".