145982401 has 2 divisors, whose sum is σ = 145982402. Its totient is φ = 145982400.

The previous prime is 145982399. The next prime is 145982413. The reversal of 145982401 is 104289541.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 142563600 + 3418801 = 11940^2 + 1849^2 .

It is a cyclic number.

It is not a de Polignac number, because 145982401 - 2¹ = 145982399 is a prime.

It is a super-3 number, since 3×145982401³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

Together with 145982399, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (145902401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72991200 + 72991201.

It is an arithmetic number, because the mean of its divisors is an integer number (72991201).

Almost surely, 2^145982401 is an apocalyptic number.

It is an amenable number.

145982401 is a deficient number, since it is larger than the sum of its proper divisors (1).

145982401 is an equidigital number, since it uses as much as digits as its factorization.

145982401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 145982401 is about 12082.3176998455. The cubic root of 145982401 is about 526.5425844434.

The spelling of 145982401 in words is "one hundred forty-five million, nine hundred eighty-two thousand, four hundred one".