145517722 has 16 divisors (see below), whose sum is σ = 264133440. Its totient is φ = 58696128.

The previous prime is 145517717. The next prime is 145517731. The reversal of 145517722 is 227715541.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 305472 + ... + 305947.

It is an arithmetic number, because the mean of its divisors is an integer number (16508340).

Almost surely, 2^145517722 is an apocalyptic number.

145517722 is a deficient number, since it is larger than the sum of its proper divisors (118615718).

145517722 is a wasteful number, since it uses less digits than its factorization.

145517722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 611445.

The product of its digits is 19600, while the sum is 34.

The square root of 145517722 is about 12063.0726599818. The cubic root of 145517722 is about 525.9833084671.

The spelling of 145517722 in words is "one hundred forty-five million, five hundred seventeen thousand, seven hundred twenty-two".