145170651 has 4 divisors (see below), whose sum is σ = 193560872. Its totient is φ = 96780432.

The previous prime is 145170631. The next prime is 145170653. The reversal of 145170651 is 156071541.

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

It is not a de Polignac number, because 145170651 - 2⁷ = 145170523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145170653) 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, 24195106 + ... + 24195111.

It is an arithmetic number, because the mean of its divisors is an integer number (48390218).

Almost surely, 2^145170651 is an apocalyptic number.

145170651 is a deficient number, since it is larger than the sum of its proper divisors (48390221).

145170651 is an equidigital number, since it uses as much as digits as its factorization.

145170651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48390220.

The product of its (nonzero) digits is 4200, while the sum is 30.

The square root of 145170651 is about 12048.6783922553. The cubic root of 145170651 is about 525.5648053054.

The spelling of 145170651 in words is "one hundred forty-five million, one hundred seventy thousand, six hundred fifty-one".