145377305 has 4 divisors (see below), whose sum is σ = 174452772. Its totient is φ = 116301840.

The previous prime is 145377299. The next prime is 145377307. The reversal of 145377305 is 503773541.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18386944 + 126990361 = 4288^2 + 11269^2 .

It is not a de Polignac number, because 145377305 - 2¹⁴ = 145360921 is a prime.

It is a super-2 number, since 2×145377305² = 42269121618126050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145377307) 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, 14537726 + ... + 14537735.

It is an arithmetic number, because the mean of its divisors is an integer number (43613193).

Almost surely, 2^145377305 is an apocalyptic number.

It is an amenable number.

145377305 is a deficient number, since it is larger than the sum of its proper divisors (29075467).

145377305 is an equidigital number, since it uses as much as digits as its factorization.

145377305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29075466.

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 145377305 is about 12057.2511378009. The cubic root of 145377305 is about 525.8140718821.

The spelling of 145377305 in words is "one hundred forty-five million, three hundred seventy-seven thousand, three hundred five".