47162421 has 12 divisors (see below), whose sum is σ = 69409548. Its totient is φ = 30848064.

The previous prime is 47162411. The next prime is 47162459. The reversal of 47162421 is 12426174.

It can be written as a sum of positive squares in 2 ways, for example, as 36469521 + 10692900 = 6039^2 + 3270^2 .

It is not a de Polignac number, because 47162421 - 2¹⁹ = 46638133 is a prime.

It is a super-3 number, since 3×47162421³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47162411) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 48960 + ... + 49913.

It is an arithmetic number, because the mean of its divisors is an integer number (5784129).

Almost surely, 2^47162421 is an apocalyptic number.

It is an amenable number.

47162421 is a deficient number, since it is larger than the sum of its proper divisors (22247127).

47162421 is a wasteful number, since it uses less digits than its factorization.

47162421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98932 (or 98929 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 47162421 is about 6867.4901528870. The cubic root of 47162421 is about 361.2978386777.

Adding to 47162421 its reverse (12426174), we get a palindrome (59588595).

The spelling of 47162421 in words is "forty-seven million, one hundred sixty-two thousand, four hundred twenty-one".