145255771 has 2 divisors, whose sum is σ = 145255772. Its totient is φ = 145255770.

The previous prime is 145255723. The next prime is 145255793. The reversal of 145255771 is 177552541.

145255771 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 an emirp because it is prime and its reverse (177552541) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 145255771 - 2¹³ = 145247579 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145255771.

It is not a weakly prime, because it can be changed into another prime (145285771) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72627885 + 72627886.

It is an arithmetic number, because the mean of its divisors is an integer number (72627886).

Almost surely, 2^145255771 is an apocalyptic number.

145255771 is a deficient number, since it is larger than the sum of its proper divisors (1).

145255771 is an equidigital number, since it uses as much as digits as its factorization.

145255771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49000, while the sum is 37.

The square root of 145255771 is about 12052.2102122391. The cubic root of 145255771 is about 525.6675058976.

The spelling of 145255771 in words is "one hundred forty-five million, two hundred fifty-five thousand, seven hundred seventy-one".