144774081 has 32 divisors (see below), whose sum is σ = 221457920. Its totient is φ = 93405312.

The previous prime is 144774079. The next prime is 144774083. The reversal of 144774081 is 180477441.

It is an interprime number because it is at equal distance from previous prime (144774079) and next prime (144774083).

It is not a de Polignac number, because 144774081 - 2¹ = 144774079 is a prime.

It is a super-2 number, since 2×144774081² = 41919069058789122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (144774083) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 312456 + ... + 312918.

It is an arithmetic number, because the mean of its divisors is an integer number (6920560).

Almost surely, 2^144774081 is an apocalyptic number.

It is an amenable number.

144774081 is a deficient number, since it is larger than the sum of its proper divisors (76683839).

144774081 is a wasteful number, since it uses less digits than its factorization.

144774081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 822 (or 816 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 144774081 is about 12032.2101461037. The cubic root of 144774081 is about 525.0857982225.

The spelling of 144774081 in words is "one hundred forty-four million, seven hundred seventy-four thousand, eighty-one".