145504111 has 16 divisors (see below), whose sum is σ = 153872640. Its totient is φ = 137410560.

The previous prime is 145504103. The next prime is 145504159. The reversal of 145504111 is 111405541.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 145504111 - 2³ = 145504103 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145504181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255435 + ... + 256003.

It is an arithmetic number, because the mean of its divisors is an integer number (9617040).

Almost surely, 2^145504111 is an apocalyptic number.

145504111 is a deficient number, since it is larger than the sum of its proper divisors (8368529).

145504111 is a wasteful number, since it uses less digits than its factorization.

145504111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 786.

The product of its (nonzero) digits is 400, while the sum is 22.

The square root of 145504111 is about 12062.5084870436. The cubic root of 145504111 is about 525.9669086730.

Adding to 145504111 its reverse (111405541), we get a palindrome (256909652).

The spelling of 145504111 in words is "one hundred forty-five million, five hundred four thousand, one hundred eleven".