145549151 has 4 divisors (see below), whose sum is σ = 158780904. Its totient is φ = 132317400.

The previous prime is 145549099. The next prime is 145549153. The reversal of 145549151 is 151945541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 145549151 - 2¹⁸ = 145287007 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145549153) 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 3 ways as a sum of consecutive naturals, for example, 6615860 + ... + 6615881.

It is an arithmetic number, because the mean of its divisors is an integer number (39695226).

Almost surely, 2^145549151 is an apocalyptic number.

145549151 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

145549151 is a deficient number, since it is larger than the sum of its proper divisors (13231753).

145549151 is a wasteful number, since it uses less digits than its factorization.

145549151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13231752.

The product of its digits is 18000, while the sum is 35.

The square root of 145549151 is about 12064.3752842822. The cubic root of 145549151 is about 526.0211731322.

The spelling of 145549151 in words is "one hundred forty-five million, five hundred forty-nine thousand, one hundred fifty-one".