145258715 has 32 divisors (see below), whose sum is σ = 208244736. Its totient is φ = 95172480.

The previous prime is 145258697. The next prime is 145258721. The reversal of 145258715 is 517852541.

145258715 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 145258715 - 2¹⁰ = 145257691 is a prime.

It is a super-2 number, since 2×145258715² = 42200188566902450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 89249 + ... + 90861.

It is an arithmetic number, because the mean of its divisors is an integer number (6507648).

Almost surely, 2^145258715 is an apocalyptic number.

145258715 is a deficient number, since it is larger than the sum of its proper divisors (62986021).

145258715 is a wasteful number, since it uses less digits than its factorization.

145258715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739.

The product of its digits is 56000, while the sum is 38.

The square root of 145258715 is about 12052.3323468945. The cubic root of 145258715 is about 525.6710572303.

The spelling of 145258715 in words is "one hundred forty-five million, two hundred fifty-eight thousand, seven hundred fifteen".