145244715 has 32 divisors (see below), whose sum is σ = 289737216. Its totient is φ = 60360960.

The previous prime is 145244713. The next prime is 145244741. The reversal of 145244715 is 517442541.

It is not a de Polignac number, because 145244715 - 2¹ = 145244713 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (145244713) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 61722 + ... + 64031.

It is an arithmetic number, because the mean of its divisors is an integer number (9054288).

Almost surely, 2^145244715 is an apocalyptic number.

145244715 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

145244715 is a deficient number, since it is larger than the sum of its proper divisors (144492501).

145244715 is a wasteful number, since it uses less digits than its factorization.

145244715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125779.

The product of its digits is 22400, while the sum is 33.

The square root of 145244715 is about 12051.7515324537. The cubic root of 145244715 is about 525.6541686710.

The spelling of 145244715 in words is "one hundred forty-five million, two hundred forty-four thousand, seven hundred fifteen".