145512045 has 64 divisors (see below), whose sum is σ = 299450880. Its totient is φ = 66484800.

The previous prime is 145512019. The next prime is 145512067. The reversal of 145512045 is 540215541.

145512045 is a `hidden beast` number, since 1 + 455 + 1 + 204 + 5 = 666.

145512045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 145512045 - 2¹⁴ = 145495661 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 75595 + ... + 77495.

It is an arithmetic number, because the mean of its divisors is an integer number (4678920).

Almost surely, 2^145512045 is an apocalyptic number.

145512045 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145512045 is an abundant number, since it is smaller than the sum of its proper divisors (153938835).

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

145512045 is an frugal number, since it uses more digits than its factorization.

145512045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934 (or 1916 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 145512045 is about 12062.8373527956. The cubic root of 145512045 is about 525.9764684158.

Adding to 145512045 its reverse (540215541), we get a palindrome (685727586).

The spelling of 145512045 in words is "one hundred forty-five million, five hundred twelve thousand, forty-five".