547832421 has 6 divisors (see below), whose sum is σ = 791313510. Its totient is φ = 365221608.

The previous prime is 547832357. The next prime is 547832431. The reversal of 547832421 is 124238745.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 411643521 + 136188900 = 20289^2 + 11670^2 .

It is not a de Polignac number, because 547832421 - 2⁶ = 547832357 is a prime.

It is a super-2 number, since 2×547832421² = 600240722997442482, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (547832431) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30435126 + ... + 30435143.

It is an arithmetic number, because the mean of its divisors is an integer number (131885585).

Almost surely, 2^547832421 is an apocalyptic number.

It is an amenable number.

547832421 is a deficient number, since it is larger than the sum of its proper divisors (243481089).

547832421 is a wasteful number, since it uses less digits than its factorization.

547832421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60870275 (or 60870272 counting only the distinct ones).

The product of its digits is 53760, while the sum is 36.

The square root of 547832421 is about 23405.8202377101. The cubic root of 547832421 is about 818.2435240970.

The spelling of 547832421 in words is "five hundred forty-seven million, eight hundred thirty-two thousand, four hundred twenty-one".