229312545 has 48 divisors (see below), whose sum is σ = 460924800. Its totient is φ = 95293440.

The previous prime is 229312529. The next prime is 229312561. The reversal of 229312545 is 545213922.

It is an interprime number because it is at equal distance from previous prime (229312529) and next prime (229312561).

It is not a de Polignac number, because 229312545 - 2⁴ = 229312529 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 3681 + ... + 21729.

It is an arithmetic number, because the mean of its divisors is an integer number (9602600).

Almost surely, 2^229312545 is an apocalyptic number.

It is an amenable number.

229312545 is an abundant number, since it is smaller than the sum of its proper divisors (231612255).

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

229312545 is a wasteful number, since it uses less digits than its factorization.

229312545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18086 (or 18075 counting only the distinct ones).

The product of its digits is 21600, while the sum is 33.

The square root of 229312545 is about 15143.0692067361. The cubic root of 229312545 is about 612.0815256210.

The spelling of 229312545 in words is "two hundred twenty-nine million, three hundred twelve thousand, five hundred forty-five".