145307401 has 2 divisors, whose sum is σ = 145307402. Its totient is φ = 145307400.

The previous prime is 145307377. The next prime is 145307417. The reversal of 145307401 is 104703541.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 127667401 + 17640000 = 11299^2 + 4200^2 .

It is a cyclic number.

It is not a de Polignac number, because 145307401 - 2⁵ = 145307369 is a prime.

It is a super-2 number, since 2×145307401² = 42228481570749602, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (145307441) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72653700 + 72653701.

It is an arithmetic number, because the mean of its divisors is an integer number (72653701).

Almost surely, 2^145307401 is an apocalyptic number.

It is an amenable number.

145307401 is a deficient number, since it is larger than the sum of its proper divisors (1).

145307401 is an equidigital number, since it uses as much as digits as its factorization.

145307401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 145307401 is about 12054.3519527182. The cubic root of 145307401 is about 525.7297799544.

The spelling of 145307401 in words is "one hundred forty-five million, three hundred seven thousand, four hundred one".