961226551 has 8 divisors (see below), whose sum is σ = 982075904. Its totient is φ = 940584960.

The previous prime is 961226543. The next prime is 961226621. The reversal of 961226551 is 155622169.

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 961226551 - 2³ = 961226543 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 961226551.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (961226501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42570 + ... + 61111.

It is an arithmetic number, because the mean of its divisors is an integer number (122759488).

Almost surely, 2^961226551 is an apocalyptic number.

961226551 is a deficient number, since it is larger than the sum of its proper divisors (20849353).

961226551 is a wasteful number, since it uses less digits than its factorization.

961226551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103881.

The product of its digits is 32400, while the sum is 37.

The square root of 961226551 is about 31003.6538330565. The cubic root of 961226551 is about 986.9047807770.

It can be divided in two parts, 9612 and 26551, that added together give a palindrome (36163).

The spelling of 961226551 in words is "nine hundred sixty-one million, two hundred twenty-six thousand, five hundred fifty-one".