47532421 has 8 divisors (see below), whose sum is σ = 51310080. Its totient is φ = 43897392.

The previous prime is 47532409. The next prime is 47532427. The reversal of 47532421 is 12423574.

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 47532421 - 2⁵ = 47532389 is a prime.

It is a super-2 number, since 2×47532421² = 4518662092242482, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47532421.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47532427) 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, 34965 + ... + 36298.

It is an arithmetic number, because the mean of its divisors is an integer number (6413760).

Almost surely, 2^47532421 is an apocalyptic number.

It is an amenable number.

47532421 is a deficient number, since it is larger than the sum of its proper divisors (3777659).

47532421 is a wasteful number, since it uses less digits than its factorization.

47532421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71315.

The product of its digits is 6720, while the sum is 28.

The square root of 47532421 is about 6894.3760413833. The cubic root of 47532421 is about 362.2402000555.

Adding to 47532421 its reverse (12423574), we get a palindrome (59955995).

It can be divided in two parts, 475 and 32421, that added together give a triangular number (32896 = T₂₅₆).

The spelling of 47532421 in words is "forty-seven million, five hundred thirty-two thousand, four hundred twenty-one".