145087715 has 4 divisors (see below), whose sum is σ = 174105264. Its totient is φ = 116070168.

The previous prime is 145087699. The next prime is 145087717. The reversal of 145087715 is 517780541.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 517780541 = 1733 ⋅298777.

It is a cyclic number.

It is not a de Polignac number, because 145087715 - 2⁴ = 145087699 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145087717) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14508767 + ... + 14508776.

It is an arithmetic number, because the mean of its divisors is an integer number (43526316).

Almost surely, 2^145087715 is an apocalyptic number.

145087715 is a deficient number, since it is larger than the sum of its proper divisors (29017549).

145087715 is an equidigital number, since it uses as much as digits as its factorization.

145087715 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29017548.

The product of its (nonzero) digits is 39200, while the sum is 38.

The square root of 145087715 is about 12045.2361952765. The cubic root of 145087715 is about 525.4647011735.

The spelling of 145087715 in words is "one hundred forty-five million, eighty-seven thousand, seven hundred fifteen".