145719277 has 4 divisors (see below), whose sum is σ = 158966496. Its totient is φ = 132472060.

The previous prime is 145719271. The next prime is 145719307. The reversal of 145719277 is 772917541.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 145719277 - 2⁷ = 145719149 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 (145719271) 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, 6623593 + ... + 6623614.

It is an arithmetic number, because the mean of its divisors is an integer number (39741624).

Almost surely, 2^145719277 is an apocalyptic number.

It is an amenable number.

145719277 is a deficient number, since it is larger than the sum of its proper divisors (13247219).

145719277 is a wasteful number, since it uses less digits than its factorization.

145719277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13247218.

The product of its digits is 123480, while the sum is 43.

The square root of 145719277 is about 12071.4239839383. The cubic root of 145719277 is about 526.2260410026.

The spelling of 145719277 in words is "one hundred forty-five million, seven hundred nineteen thousand, two hundred seventy-seven".