145520230 has 8 divisors (see below), whose sum is σ = 261936432. Its totient is φ = 58208088.

The previous prime is 145520227. The next prime is 145520239. The reversal of 145520230 is 32025541.

145520230 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×145520230² = 42352274678505800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145520239) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7276002 + ... + 7276021.

It is an arithmetic number, because the mean of its divisors is an integer number (32742054).

Almost surely, 2^145520230 is an apocalyptic number.

145520230 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

145520230 is a deficient number, since it is larger than the sum of its proper divisors (116416202).

145520230 is a wasteful number, since it uses less digits than its factorization.

145520230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14552030.

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 145520230 is about 12063.1766131480. The cubic root of 145520230 is about 525.9863302264.

Adding to 145520230 its reverse (32025541), we get a palindrome (177545771).

The spelling of 145520230 in words is "one hundred forty-five million, five hundred twenty thousand, two hundred thirty".