145572549 has 8 divisors (see below), whose sum is σ = 194157600. Its totient is φ = 97017936.

The previous prime is 145572533. The next prime is 145572577. The reversal of 145572549 is 945275541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 145572549 - 2⁴ = 145572533 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 145572549.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145570549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8314 + ... + 18980.

It is an arithmetic number, because the mean of its divisors is an integer number (24269700).

Almost surely, 2^145572549 is an apocalyptic number.

It is an amenable number.

145572549 is a deficient number, since it is larger than the sum of its proper divisors (48585051).

145572549 is a wasteful number, since it uses less digits than its factorization.

145572549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15219.

The product of its digits is 252000, while the sum is 42.

The square root of 145572549 is about 12065.3449598426. The cubic root of 145572549 is about 526.0493587631.

The spelling of 145572549 in words is "one hundred forty-five million, five hundred seventy-two thousand, five hundred forty-nine".