145709377 has 4 divisors (see below), whose sum is σ = 158955696. Its totient is φ = 132463060.

The previous prime is 145709371. The next prime is 145709381. The reversal of 145709377 is 773907541.

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 a de Polignac number, because none of the positive numbers 2^k-145709377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145709371) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6623143 + ... + 6623164.

It is an arithmetic number, because the mean of its divisors is an integer number (39738924).

Almost surely, 2^145709377 is an apocalyptic number.

It is an amenable number.

145709377 is a deficient number, since it is larger than the sum of its proper divisors (13246319).

145709377 is a wasteful number, since it uses less digits than its factorization.

145709377 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13246318.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 145709377 is about 12071.0139176459. The cubic root of 145709377 is about 526.2141236688.

The spelling of 145709377 in words is "one hundred forty-five million, seven hundred nine thousand, three hundred seventy-seven".