145377597 has 4 divisors (see below), whose sum is σ = 193836800. Its totient is φ = 96918396.

The previous prime is 145377559. The next prime is 145377611. The reversal of 145377597 is 795773541.

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 de Polignac number, because none of the positive numbers 2^k-145377597 is a prime.

It is a super-2 number, since 2×145377597² = 42269291418988818, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145377527) 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, 24229597 + ... + 24229602.

It is an arithmetic number, because the mean of its divisors is an integer number (48459200).

Almost surely, 2^145377597 is an apocalyptic number.

It is an amenable number.

145377597 is a deficient number, since it is larger than the sum of its proper divisors (48459203).

145377597 is an equidigital number, since it uses as much as digits as its factorization.

145377597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48459202.

The product of its digits is 926100, while the sum is 48.

The square root of 145377597 is about 12057.2632466908. The cubic root of 145377597 is about 525.8144239260.

The spelling of 145377597 in words is "one hundred forty-five million, three hundred seventy-seven thousand, five hundred ninety-seven".