145351771 has 2 divisors, whose sum is σ = 145351772. Its totient is φ = 145351770.

The previous prime is 145351763. The next prime is 145351783. The reversal of 145351771 is 177153541.

It is a happy number.

145351771 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145351771 - 2³ = 145351763 is a prime.

It is a super-2 number, since 2×145351771² = 42254274665672882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145351721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72675885 + 72675886.

It is an arithmetic number, because the mean of its divisors is an integer number (72675886).

Almost surely, 2^145351771 is an apocalyptic number.

145351771 is a deficient number, since it is larger than the sum of its proper divisors (1).

145351771 is an equidigital number, since it uses as much as digits as its factorization.

145351771 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14700, while the sum is 34.

The square root of 145351771 is about 12056.1922264038. The cubic root of 145351771 is about 525.7832855026.

The spelling of 145351771 in words is "one hundred forty-five million, three hundred fifty-one thousand, seven hundred seventy-one".