145417201 has 32 divisors (see below), whose sum is σ = 168956928. Its totient is φ = 124354560.

The previous prime is 145417193. The next prime is 145417211. The reversal of 145417201 is 102714541.

It is not a de Polignac number, because 145417201 - 2³ = 145417193 is a prime.

It is a super-2 number, since 2×145417201² = 42292324693348802, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145417211) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 753361 + ... + 753553.

It is an arithmetic number, because the mean of its divisors is an integer number (5279904).

Almost surely, 2^145417201 is an apocalyptic number.

It is an amenable number.

145417201 is a deficient number, since it is larger than the sum of its proper divisors (23539727).

145417201 is a wasteful number, since it uses less digits than its factorization.

145417201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 321.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 145417201 is about 12058.9054644275. The cubic root of 145417201 is about 525.8621673293.

The spelling of 145417201 in words is "one hundred forty-five million, four hundred seventeen thousand, two hundred one".