145440577 has 4 divisors (see below), whose sum is σ = 148822960. Its totient is φ = 142058196.

The previous prime is 145440563. The next prime is 145440619. The reversal of 145440577 is 775044541.

145440577 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 145440577 - 2¹¹ = 145438529 is a prime.

It is a super-2 number, since 2×145440577² = 42305922876185858, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145440557) 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, 1691127 + ... + 1691212.

It is an arithmetic number, because the mean of its divisors is an integer number (37205740).

Almost surely, 2^145440577 is an apocalyptic number.

It is an amenable number.

145440577 is a deficient number, since it is larger than the sum of its proper divisors (3382383).

145440577 is an equidigital number, since it uses as much as digits as its factorization.

145440577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3382382.

The product of its (nonzero) digits is 78400, while the sum is 37.

The square root of 145440577 is about 12059.8746676738. The cubic root of 145440577 is about 525.8903434903.

The spelling of 145440577 in words is "one hundred forty-five million, four hundred forty thousand, five hundred seventy-seven".