1445550121 has 8 divisors (see below), whose sum is σ = 1461192480. Its totient is φ = 1429992192.

The previous prime is 1445550107. The next prime is 1445550167. The reversal of 1445550121 is 1210555441.

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

It is a cyclic number.

It is not a de Polignac number, because 1445550121 - 2²³ = 1437161513 is a prime.

It is a super-2 number, since 2×1445550121² = 4179230304646229282, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1445550121.

It is not an unprimeable number, because it can be changed into a prime (1445550721) 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 7 ways as a sum of consecutive naturals, for example, 13626 + ... + 55468.

It is an arithmetic number, because the mean of its divisors is an integer number (182649060).

Almost surely, 2^1445550121 is an apocalyptic number.

It is an amenable number.

1445550121 is a deficient number, since it is larger than the sum of its proper divisors (15642359).

1445550121 is a wasteful number, since it uses less digits than its factorization.

1445550121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42215.

The product of its (nonzero) digits is 4000, while the sum is 28.

The square root of 1445550121 is about 38020.3908580646. The cubic root of 1445550121 is about 1130.6921702354.

The spelling of 1445550121 in words is "one billion, four hundred forty-five million, five hundred fifty thousand, one hundred twenty-one".