2251555633 has 8 divisors (see below), whose sum is σ = 2434724352. Its totient is φ = 2074022976.

The previous prime is 2251555627. The next prime is 2251555639. The reversal of 2251555633 is 3365551522.

It is an interprime number because it is at equal distance from previous prime (2251555627) and next prime (2251555639).

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-2251555633 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2251555592 and 2251555601.

It is not an unprimeable number, because it can be changed into a prime (2251555639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1408185 + ... + 1409782.

It is an arithmetic number, because the mean of its divisors is an integer number (304340544).

Almost surely, 2^2251555633 is an apocalyptic number.

It is an amenable number.

2251555633 is a deficient number, since it is larger than the sum of its proper divisors (183168719).

2251555633 is a wasteful number, since it uses less digits than its factorization.

2251555633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2818031.

The product of its digits is 135000, while the sum is 37.

The square root of 2251555633 is about 47450.5598807854. The cubic root of 2251555633 is about 1310.6726209990.

The spelling of 2251555633 in words is "two billion, two hundred fifty-one million, five hundred fifty-five thousand, six hundred thirty-three".