145231055 has 8 divisors (see below), whose sum is σ = 175876800. Its totient is φ = 115118496.

The previous prime is 145231027. The next prime is 145231069. The reversal of 145231055 is 550132541.

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

It is a cyclic number.

It is not a de Polignac number, because 145231055 - 2¹² = 145226959 is a prime.

It is a plaindrome in base 6.

It is a zygodrome in base 6.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 132695 + ... + 133784.

It is an arithmetic number, because the mean of its divisors is an integer number (21984600).

Almost surely, 2^145231055 is an apocalyptic number.

145231055 is a deficient number, since it is larger than the sum of its proper divisors (30645745).

145231055 is a wasteful number, since it uses less digits than its factorization.

145231055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 266593.

The product of its (nonzero) digits is 3000, while the sum is 26.

The square root of 145231055 is about 12051.1847965252. The cubic root of 145231055 is about 525.6376892164.

Adding to 145231055 its reverse (550132541), we get a palindrome (695363596).

The spelling of 145231055 in words is "one hundred forty-five million, two hundred thirty-one thousand, fifty-five".