144901551 has 4 divisors (see below), whose sum is σ = 193202072. Its totient is φ = 96601032.

The previous prime is 144901531. The next prime is 144901573. The reversal of 144901551 is 155109441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 155109441 = 3 ⋅51703147.

It is not a de Polignac number, because 144901551 - 2¹⁵ = 144868783 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 (144901501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24150256 + ... + 24150261.

It is an arithmetic number, because the mean of its divisors is an integer number (48300518).

Almost surely, 2^144901551 is an apocalyptic number.

144901551 is a deficient number, since it is larger than the sum of its proper divisors (48300521).

144901551 is an equidigital number, since it uses as much as digits as its factorization.

144901551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48300520.

The product of its (nonzero) digits is 3600, while the sum is 30.

The square root of 144901551 is about 12037.5060124596. The cubic root of 144901551 is about 525.2398613708.

The spelling of 144901551 in words is "one hundred forty-four million, nine hundred one thousand, five hundred fifty-one".