145624401 has 24 divisors (see below), whose sum is σ = 227223360. Its totient is φ = 89339616.

The previous prime is 145624361. The next prime is 145624403. The reversal of 145624401 is 104426541.

It is not a de Polignac number, because 145624401 - 2¹⁹ = 145100113 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145624403) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 40270 + ... + 43736.

It is an arithmetic number, because the mean of its divisors is an integer number (9467640).

Almost surely, 2^145624401 is an apocalyptic number.

It is an amenable number.

145624401 is a deficient number, since it is larger than the sum of its proper divisors (81598959).

145624401 is a wasteful number, since it uses less digits than its factorization.

145624401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3845 (or 3842 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 145624401 is about 12067.4935674315. The cubic root of 145624401 is about 526.1118098080. Note that the first 3 decimals are identical.

The spelling of 145624401 in words is "one hundred forty-five million, six hundred twenty-four thousand, four hundred one".