145521679 has 2 divisors, whose sum is σ = 145521680. Its totient is φ = 145521678.

The previous prime is 145521613. The next prime is 145521707. The reversal of 145521679 is 976125541.

145521679 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145521679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145521379) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72760839 + 72760840.

It is an arithmetic number, because the mean of its divisors is an integer number (72760840).

Almost surely, 2^145521679 is an apocalyptic number.

145521679 is a deficient number, since it is larger than the sum of its proper divisors (1).

145521679 is an equidigital number, since it uses as much as digits as its factorization.

145521679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75600, while the sum is 40.

The square root of 145521679 is about 12063.2366718058. The cubic root of 145521679 is about 525.9880760356.

The spelling of 145521679 in words is "one hundred forty-five million, five hundred twenty-one thousand, six hundred seventy-nine".