1223002551 has 16 divisors (see below), whose sum is σ = 1678024064. Its totient is φ = 791744544.

The previous prime is 1223002537. The next prime is 1223002589. The reversal of 1223002551 is 1552003221.

It is not a de Polignac number, because 1223002551 - 2¹¹ = 1223000503 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 (1223002511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47520 + ... + 68586.

It is an arithmetic number, because the mean of its divisors is an integer number (104876504).

Almost surely, 2^1223002551 is an apocalyptic number.

1223002551 is a deficient number, since it is larger than the sum of its proper divisors (455021513).

1223002551 is a wasteful number, since it uses less digits than its factorization.

1223002551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21630.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 1223002551 is about 34971.4533727153. The cubic root of 1223002551 is about 1069.4056008046.

Adding to 1223002551 its reverse (1552003221), we get a palindrome (2775005772).

The spelling of 1223002551 in words is "one billion, two hundred twenty-three million, two thousand, five hundred fifty-one".