145545401 has 2 divisors, whose sum is σ = 145545402. Its totient is φ = 145545400.

The previous prime is 145545391. The next prime is 145545431. The reversal of 145545401 is 104545541.

145545401 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 can be written as a sum of positive squares in only one way, i.e., 107661376 + 37884025 = 10376^2 + 6155^2 .

It is a cyclic number.

It is not a de Polignac number, because 145545401 - 2¹⁴ = 145529017 is a prime.

It is not a weakly prime, because it can be changed into another prime (145545431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72772700 + 72772701.

It is an arithmetic number, because the mean of its divisors is an integer number (72772701).

Almost surely, 2^145545401 is an apocalyptic number.

It is an amenable number.

145545401 is a deficient number, since it is larger than the sum of its proper divisors (1).

145545401 is an equidigital number, since it uses as much as digits as its factorization.

145545401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8000, while the sum is 29.

The square root of 145545401 is about 12064.2198670283. The cubic root of 145545401 is about 526.0166555372.

The spelling of 145545401 in words is "one hundred forty-five million, five hundred forty-five thousand, four hundred one".