145550101 has 16 divisors (see below), whose sum is σ = 153846000. Its totient is φ = 137507328.

The previous prime is 145550081. The next prime is 145550129. The reversal of 145550101 is 101055541.

It is a happy number.

145550101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 8 ways, for example, as 32148900 + 113401201 = 5670^2 + 10649^2 .

It is not a de Polignac number, because 145550101 - 2⁷ = 145549973 is a prime.

It is a super-2 number, since 2×145550101² = 42369663802220402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145550161) 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, 416875 + ... + 417223.

It is an arithmetic number, because the mean of its divisors is an integer number (9615375).

Almost surely, 2^145550101 is an apocalyptic number.

It is an amenable number.

145550101 is a deficient number, since it is larger than the sum of its proper divisors (8295899).

145550101 is a wasteful number, since it uses less digits than its factorization.

145550101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 648.

The product of its (nonzero) digits is 500, while the sum is 22.

The square root of 145550101 is about 12064.4146563354. The cubic root of 145550101 is about 526.0223175773.

The spelling of 145550101 in words is "one hundred forty-five million, five hundred fifty thousand, one hundred one".