145339773 has 4 divisors (see below), whose sum is σ = 193786368. Its totient is φ = 96893180.

The previous prime is 145339771. The next prime is 145339807. The reversal of 145339773 is 377933541.

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 145339773 - 2¹ = 145339771 is a prime.

It is a super-2 number, since 2×145339773² = 42247299231383058, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145339771) 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, 24223293 + ... + 24223298.

It is an arithmetic number, because the mean of its divisors is an integer number (48446592).

Almost surely, 2^145339773 is an apocalyptic number.

It is an amenable number.

145339773 is a deficient number, since it is larger than the sum of its proper divisors (48446595).

145339773 is an equidigital number, since it uses as much as digits as its factorization.

145339773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48446594.

The product of its digits is 238140, while the sum is 42.

The square root of 145339773 is about 12055.6946295102. The cubic root of 145339773 is about 525.7688182521.

The spelling of 145339773 in words is "one hundred forty-five million, three hundred thirty-nine thousand, seven hundred seventy-three".