1223001455 has 24 divisors (see below), whose sum is σ = 1592345952. Its totient is φ = 901340544.

The previous prime is 1223001433. The next prime is 1223001457. The reversal of 1223001455 is 5541003221.

It is not a de Polignac number, because 1223001455 - 2¹⁰ = 1223000431 is a prime.

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 1223001455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1223001457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 545597 + ... + 547833.

It is an arithmetic number, because the mean of its divisors is an integer number (66347748).

Almost surely, 2^1223001455 is an apocalyptic number.

1223001455 is a deficient number, since it is larger than the sum of its proper divisors (369344497).

1223001455 is a wasteful number, since it uses less digits than its factorization.

1223001455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2915 (or 2902 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1223001455 is about 34971.4377027883. The cubic root of 1223001455 is about 1069.4052813534.

Adding to 1223001455 its reverse (5541003221), we get a palindrome (6764004676).

The spelling of 1223001455 in words is "one billion, two hundred twenty-three million, one thousand, four hundred fifty-five".