47961591 has 8 divisors (see below), whose sum is σ = 64007664. Its totient is φ = 31944960.

The previous prime is 47961581. The next prime is 47961623. The reversal of 47961591 is 19516974.

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

It is not a de Polignac number, because 47961591 - 2⁵ = 47961559 is a prime.

It is a super-2 number, since 2×47961591² = 4600628422502562, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47961521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3226 + ... + 10311.

It is an arithmetic number, because the mean of its divisors is an integer number (8000958).

Almost surely, 2^47961591 is an apocalyptic number.

47961591 is a deficient number, since it is larger than the sum of its proper divisors (16046073).

47961591 is a wasteful number, since it uses less digits than its factorization.

47961591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14721.

The product of its digits is 68040, while the sum is 42.

The square root of 47961591 is about 6925.4307447263. The cubic root of 47961591 is about 363.3271568870.

The spelling of 47961591 in words is "forty-seven million, nine hundred sixty-one thousand, five hundred ninety-one".