1213256554 has 8 divisors (see below), whose sum is σ = 1820047680. Its totient is φ = 606573996.

The previous prime is 1213256537. The next prime is 1213256587. The reversal of 1213256554 is 4556523121.

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

It is an unprimeable number.

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, 12207 + ... + 50749.

It is an arithmetic number, because the mean of its divisors is an integer number (227505960).

Almost surely, 2^1213256554 is an apocalyptic number.

1213256554 is a deficient number, since it is larger than the sum of its proper divisors (606791126).

1213256554 is a wasteful number, since it uses less digits than its factorization.

1213256554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54284.

The product of its digits is 36000, while the sum is 34.

The square root of 1213256554 is about 34831.8324812233. The cubic root of 1213256554 is about 1066.5573559642.

Adding to 1213256554 its reverse (4556523121), we get a palindrome (5769779675).

It can be divided in two parts, 12132 and 56554, that added together give a palindrome (68686).

The spelling of 1213256554 in words is "one billion, two hundred thirteen million, two hundred fifty-six thousand, five hundred fifty-four".