27231552 has 168 divisors, whose sum is σ = 86538816. Its totient is φ = 8460288.

The previous prime is 27231539. The next prime is 27231557. The reversal of 27231552 is 25513272.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27231557) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 264333 + ... + 264435.

It is an arithmetic number, because the mean of its divisors is an integer number (515112).

Almost surely, 2^27231552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27231552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43269408).

27231552 is an abundant number, since it is smaller than the sum of its proper divisors (59307264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27231552 is a wasteful number, since it uses less digits than its factorization.

27231552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147 (or 125 counting only the distinct ones).

The product of its digits is 4200, while the sum is 27.

The square root of 27231552 is about 5218.3859573627. The cubic root of 27231552 is about 300.8551600216.

The spelling of 27231552 in words is "twenty-seven million, two hundred thirty-one thousand, five hundred fifty-two".