145711551 has 16 divisors (see below), whose sum is σ = 205283840. Its totient is φ = 91679040.

The previous prime is 145711529. The next prime is 145711571. The reversal of 145711551 is 155117541.

It is not a de Polignac number, because 145711551 - 2⁶ = 145711487 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 (145711571) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10731 + ... + 20163.

It is an arithmetic number, because the mean of its divisors is an integer number (12830240).

Almost surely, 2^145711551 is an apocalyptic number.

145711551 is a deficient number, since it is larger than the sum of its proper divisors (59572289).

145711551 is a wasteful number, since it uses less digits than its factorization.

145711551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9726.

The product of its digits is 3500, while the sum is 30.

The square root of 145711551 is about 12071.1039677405. The cubic root of 145711551 is about 526.2167407134.

The spelling of 145711551 in words is "one hundred forty-five million, seven hundred eleven thousand, five hundred fifty-one".