47161091 has 4 divisors (see below), whose sum is σ = 47209392. Its totient is φ = 47112792.

The previous prime is 47161087. The next prime is 47161123. The reversal of 47161091 is 19016174.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19016174 = 2 ⋅9508087.

It is a cyclic number.

It is not a de Polignac number, because 47161091 - 2² = 47161087 is a prime.

It is a super-3 number, since 3×47161091³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47101091) 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, 22655 + ... + 24648.

It is an arithmetic number, because the mean of its divisors is an integer number (11802348).

Almost surely, 2^47161091 is an apocalyptic number.

47161091 is a deficient number, since it is larger than the sum of its proper divisors (48301).

47161091 is an equidigital number, since it uses as much as digits as its factorization.

47161091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48300.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 47161091 is about 6867.3933191568. The cubic root of 47161091 is about 361.2944423957.

The spelling of 47161091 in words is "forty-seven million, one hundred sixty-one thousand, ninety-one".