145105252 has 12 divisors (see below), whose sum is σ = 264974976. Its totient is φ = 69398120.

The previous prime is 145105243. The next prime is 145105271. The reversal of 145105252 is 252501541.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 788524 + ... + 788707.

It is an arithmetic number, because the mean of its divisors is an integer number (22081248).

Almost surely, 2^145105252 is an apocalyptic number.

It is an amenable number.

145105252 is a deficient number, since it is larger than the sum of its proper divisors (119869724).

145105252 is a wasteful number, since it uses less digits than its factorization.

145105252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577258 (or 1577256 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 145105252 is about 12045.9641374196. The cubic root of 145105252 is about 525.4858715926.

Adding to 145105252 its reverse (252501541), we get a palindrome (397606793).

The spelling of 145105252 in words is "one hundred forty-five million, one hundred five thousand, two hundred fifty-two".