47263121 has 8 divisors (see below), whose sum is σ = 48271464. Its totient is φ = 46259200.

The previous prime is 47263109. The next prime is 47263129. The reversal of 47263121 is 12136274.

It can be written as a sum of positive squares in 4 ways, for example, as 16516096 + 30747025 = 4064^2 + 5545^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 47263121 - 2¹⁰ = 47262097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47263129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28721 + ... + 30321.

It is an arithmetic number, because the mean of its divisors is an integer number (6033933).

Almost surely, 2^47263121 is an apocalyptic number.

It is an amenable number.

47263121 is a deficient number, since it is larger than the sum of its proper divisors (1008343).

47263121 is a wasteful number, since it uses less digits than its factorization.

47263121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211.

The product of its digits is 2016, while the sum is 26.

The square root of 47263121 is about 6874.8178884971. The cubic root of 47263121 is about 361.5548005256.

Adding to 47263121 its reverse (12136274), we get a palindrome (59399395).

The spelling of 47263121 in words is "forty-seven million, two hundred sixty-three thousand, one hundred twenty-one".