47259721 has 4 divisors (see below), whose sum is σ = 47471872. Its totient is φ = 47047572.

The previous prime is 47259713. The next prime is 47259727. The reversal of 47259721 is 12795274.

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 47259721 - 2³ = 47259713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47259727) 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, 105741 + ... + 106186.

It is an arithmetic number, because the mean of its divisors is an integer number (11867968).

Almost surely, 2^47259721 is an apocalyptic number.

It is an amenable number.

47259721 is a deficient number, since it is larger than the sum of its proper divisors (212151).

47259721 is a wasteful number, since it uses less digits than its factorization.

47259721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 212150.

The product of its digits is 35280, while the sum is 37.

The square root of 47259721 is about 6874.5706047723. The cubic root of 47259721 is about 361.5461305114.

The spelling of 47259721 in words is "forty-seven million, two hundred fifty-nine thousand, seven hundred twenty-one".