145222727 has 4 divisors (see below), whose sum is σ = 156393720. Its totient is φ = 134051736.

The previous prime is 145222717. The next prime is 145222751. The reversal of 145222727 is 727222541.

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

It is not a de Polignac number, because 145222727 - 2⁶ = 145222663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 145222693 and 145222702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145222717) 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, 5585477 + ... + 5585502.

It is an arithmetic number, because the mean of its divisors is an integer number (39098430).

Almost surely, 2^145222727 is an apocalyptic number.

145222727 is a deficient number, since it is larger than the sum of its proper divisors (11170993).

145222727 is a wasteful number, since it uses less digits than its factorization.

145222727 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11170992.

The product of its digits is 15680, while the sum is 32.

The square root of 145222727 is about 12050.8392653790. The cubic root of 145222727 is about 525.6276417915.

The spelling of 145222727 in words is "one hundred forty-five million, two hundred twenty-two thousand, seven hundred twenty-seven".