145405544 has 16 divisors (see below), whose sum is σ = 276705600. Its totient is φ = 71617392.

The previous prime is 145405541. The next prime is 145405571. The reversal of 145405544 is 445504541.

It is a super-2 number, since 2×145405544² = 42285544451871872, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 145405544.

It is not an unprimeable number, because it can be changed into a prime (145405541) 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, 135104 + ... + 136175.

It is an arithmetic number, because the mean of its divisors is an integer number (17294100).

Almost surely, 2^145405544 is an apocalyptic number.

It is an amenable number.

145405544 is a deficient number, since it is larger than the sum of its proper divisors (131300056).

145405544 is a wasteful number, since it uses less digits than its factorization.

145405544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 271352 (or 271348 counting only the distinct ones).

The product of its (nonzero) digits is 32000, while the sum is 32.

The square root of 145405544 is about 12058.4221190005. The cubic root of 145405544 is about 525.8481154862.

The spelling of 145405544 in words is "one hundred forty-five million, four hundred five thousand, five hundred forty-four".