47235021 has 4 divisors (see below), whose sum is σ = 62980032. Its totient is φ = 31490012.

The previous prime is 47235011. The next prime is 47235101. The reversal of 47235021 is 12053274.

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 47235021 - 2¹¹ = 47232973 is a prime.

It is a super-2 number, since 2×47235021² = 4462294417740882, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 47234982 and 47235000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47235011) 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, 7872501 + ... + 7872506.

It is an arithmetic number, because the mean of its divisors is an integer number (15745008).

Almost surely, 2^47235021 is an apocalyptic number.

It is an amenable number.

47235021 is a deficient number, since it is larger than the sum of its proper divisors (15745011).

47235021 is a wasteful number, since it uses less digits than its factorization.

47235021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15745010.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 47235021 is about 6872.7738941420. The cubic root of 47235021 is about 361.4831329209.

Adding to 47235021 its reverse (12053274), we get a palindrome (59288295).

The spelling of 47235021 in words is "forty-seven million, two hundred thirty-five thousand, twenty-one".