2231523551 has 8 divisors (see below), whose sum is σ = 2247514608. Its totient is φ = 2215584000.

The previous prime is 2231523493. The next prime is 2231523583. The reversal of 2231523551 is 1553251322.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2231523551 is a prime.

It is a super-5 number, since 5×2231523551⁵ (a number of 48 digits) contains 55555 as substring. Note that it is a super-d number also for d = 3.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2231526551) 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, 76271 + ... + 101391.

It is an arithmetic number, because the mean of its divisors is an integer number (280939326).

Almost surely, 2^2231523551 is an apocalyptic number.

2231523551 is a deficient number, since it is larger than the sum of its proper divisors (15991057).

2231523551 is a wasteful number, since it uses less digits than its factorization.

2231523551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25753.

The product of its digits is 9000, while the sum is 29.

The square root of 2231523551 is about 47239.0045513239. The cubic root of 2231523551 is about 1306.7740196301.

Adding to 2231523551 its reverse (1553251322), we get a palindrome (3784774873).

The spelling of 2231523551 in words is "two billion, two hundred thirty-one million, five hundred twenty-three thousand, five hundred fifty-one".