145171479 has 4 divisors (see below), whose sum is σ = 193561976. Its totient is φ = 96780984.

The previous prime is 145171471. The next prime is 145171487. The reversal of 145171479 is 974171541.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (145171471) and next prime (145171487).

It is not a de Polignac number, because 145171479 - 2³ = 145171471 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145171471) 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, 24195244 + ... + 24195249.

It is an arithmetic number, because the mean of its divisors is an integer number (48390494).

Almost surely, 2^145171479 is an apocalyptic number.

145171479 is a deficient number, since it is larger than the sum of its proper divisors (48390497).

145171479 is an equidigital number, since it uses as much as digits as its factorization.

145171479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48390496.

The product of its digits is 35280, while the sum is 39.

The square root of 145171479 is about 12048.7127528214. The cubic root of 145171479 is about 525.5658045129.

The spelling of 145171479 in words is "one hundred forty-five million, one hundred seventy-one thousand, four hundred seventy-nine".