145280001 has 16 divisors (see below), whose sum is σ = 196922880. Its totient is φ = 95253120.

The previous prime is 145279997. The next prime is 145280021. The reversal of 145280001 is 100082541.

It is not a de Polignac number, because 145280001 - 2² = 145279997 is a prime.

It is a super-2 number, since 2×145280001² = 42212557381120002, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145280001.

It is not an unprimeable number, because it can be changed into a prime (145280021) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 100240 + ... + 101678.

It is an arithmetic number, because the mean of its divisors is an integer number (12307680).

Almost surely, 2^145280001 is an apocalyptic number.

It is an amenable number.

145280001 is a deficient number, since it is larger than the sum of its proper divisors (51642879).

145280001 is a wasteful number, since it uses less digits than its factorization.

145280001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1976.

The product of its (nonzero) digits is 320, while the sum is 21.

The square root of 145280001 is about 12053.2153801382. The cubic root of 145280001 is about 525.6967329992.

The spelling of 145280001 in words is "one hundred forty-five million, two hundred eighty thousand, one".