145547001 has 6 divisors (see below), whose sum is σ = 210234570. Its totient is φ = 97031328.

The previous prime is 145546963. The next prime is 145547029. The reversal of 145547001 is 100745541.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 92621376 + 52925625 = 9624^2 + 7275^2 .

It is not a de Polignac number, because 145547001 - 2¹⁰ = 145545977 is a prime.

It is a super-3 number, since 3×145547001³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (145537001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8085936 + ... + 8085953.

It is an arithmetic number, because the mean of its divisors is an integer number (35039095).

Almost surely, 2^145547001 is an apocalyptic number.

It is an amenable number.

145547001 is a deficient number, since it is larger than the sum of its proper divisors (64687569).

145547001 is a wasteful number, since it uses less digits than its factorization.

145547001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16171895 (or 16171892 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 145547001 is about 12064.2861786349. The cubic root of 145547001 is about 526.0185830539.

The spelling of 145547001 in words is "one hundred forty-five million, five hundred forty-seven thousand, one".