145915279 has 4 divisors (see below), whose sum is σ = 146381776. Its totient is φ = 145448784.

The previous prime is 145915277. The next prime is 145915303. The reversal of 145915279 is 972519541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145915279 - 2¹ = 145915277 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 (145915277) 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, 232779 + ... + 233404.

It is an arithmetic number, because the mean of its divisors is an integer number (36595444).

Almost surely, 2^145915279 is an apocalyptic number.

145915279 is a deficient number, since it is larger than the sum of its proper divisors (466497).

145915279 is an equidigital number, since it uses as much as digits as its factorization.

145915279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466496.

The product of its digits is 113400, while the sum is 43.

The square root of 145915279 is about 12079.5396849383. The cubic root of 145915279 is about 526.4618714961.

The spelling of 145915279 in words is "one hundred forty-five million, nine hundred fifteen thousand, two hundred seventy-nine".