47123951 has 4 divisors (see below), whose sum is σ = 53855952. Its totient is φ = 40391952.

The previous prime is 47123899. The next prime is 47123953. The reversal of 47123951 is 15932174.

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

It is a cyclic number.

It is not a de Polignac number, because 47123951 - 2⁶ = 47123887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47123953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3365990 + ... + 3366003.

It is an arithmetic number, because the mean of its divisors is an integer number (13463988).

Almost surely, 2^47123951 is an apocalyptic number.

47123951 is a deficient number, since it is larger than the sum of its proper divisors (6732001).

47123951 is an equidigital number, since it uses as much as digits as its factorization.

47123951 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6732000.

The product of its digits is 7560, while the sum is 32.

The square root of 47123951 is about 6864.6887037942. The cubic root of 47123951 is about 361.1995760609.

The spelling of 47123951 in words is "forty-seven million, one hundred twenty-three thousand, nine hundred fifty-one".