1001224551 has 32 divisors (see below), whose sum is σ = 1478534400. Its totient is φ = 600203520.

The previous prime is 1001224517. The next prime is 1001224561. The reversal of 1001224551 is 1554221001.

It is not a de Polignac number, because 1001224551 - 2¹¹ = 1001222503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001224501) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 80680 + ... + 92258.

It is an arithmetic number, because the mean of its divisors is an integer number (46204200).

Almost surely, 2^1001224551 is an apocalyptic number.

1001224551 is a deficient number, since it is larger than the sum of its proper divisors (477309849).

1001224551 is a wasteful number, since it uses less digits than its factorization.

1001224551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11679.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1001224551 is about 31642.1325292718. The cubic root of 1001224551 is about 1000.4080171660.

Adding to 1001224551 its reverse (1554221001), we get a palindrome (2555445552).

The spelling of 1001224551 in words is "one billion, one million, two hundred twenty-four thousand, five hundred fifty-one".