47251961 has 4 divisors (see below), whose sum is σ = 47318400. Its totient is φ = 47185524.

The previous prime is 47251943. The next prime is 47251987. The reversal of 47251961 is 16915274.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47251961 - 2²² = 43057657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (47251921) 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, 32141 + ... + 33578.

It is an arithmetic number, because the mean of its divisors is an integer number (11829600).

Almost surely, 2^47251961 is an apocalyptic number.

It is an amenable number.

47251961 is a deficient number, since it is larger than the sum of its proper divisors (66439).

47251961 is an equidigital number, since it uses as much as digits as its factorization.

47251961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66438.

The product of its digits is 15120, while the sum is 35.

The square root of 47251961 is about 6874.0061827147. The cubic root of 47251961 is about 361.5263409211.

The spelling of 47251961 in words is "forty-seven million, two hundred fifty-one thousand, nine hundred sixty-one".