1213622552 has 32 divisors (see below), whose sum is σ = 2293531200. Its totient is φ = 602035200.

The previous prime is 1213622551. The next prime is 1213622563. The reversal of 1213622552 is 2552263121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213622551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 582152 + ... + 584232.

It is an arithmetic number, because the mean of its divisors is an integer number (71672850).

Almost surely, 2^1213622552 is an apocalyptic number.

It is an amenable number.

1213622552 is a deficient number, since it is larger than the sum of its proper divisors (1079908648).

1213622552 is a wasteful number, since it uses less digits than its factorization.

1213622552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2627 (or 2623 counting only the distinct ones).

The product of its digits is 7200, while the sum is 29.

The square root of 1213622552 is about 34837.0858712379. The cubic root of 1213622552 is about 1066.6645931383.

Adding to 1213622552 its reverse (2552263121), we get a palindrome (3765885673).

The spelling of 1213622552 in words is "one billion, two hundred thirteen million, six hundred twenty-two thousand, five hundred fifty-two".