145527277 has 4 divisors (see below), whose sum is σ = 166316896. Its totient is φ = 124737660.

The previous prime is 145527247. The next prime is 145527287. The reversal of 145527277 is 772725541.

145527277 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 145527277 - 2¹¹ = 145525229 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 (145527227) 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, 10394799 + ... + 10394812.

It is an arithmetic number, because the mean of its divisors is an integer number (41579224).

Almost surely, 2^145527277 is an apocalyptic number.

It is an amenable number.

145527277 is a deficient number, since it is larger than the sum of its proper divisors (20789619).

145527277 is an equidigital number, since it uses as much as digits as its factorization.

145527277 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20789618.

The product of its digits is 137200, while the sum is 40.

The square root of 145527277 is about 12063.4686968550. The cubic root of 145527277 is about 525.9948206057.

The spelling of 145527277 in words is "one hundred forty-five million, five hundred twenty-seven thousand, two hundred seventy-seven".