652743551 has 4 divisors (see below), whose sum is σ = 657883392. Its totient is φ = 647603712.

The previous prime is 652743517. The next prime is 652743587. The reversal of 652743551 is 155347256.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-652743551 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (652743251) 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 3 ways as a sum of consecutive naturals, for example, 2569730 + ... + 2569983.

It is an arithmetic number, because the mean of its divisors is an integer number (164470848).

Almost surely, 2^652743551 is an apocalyptic number.

652743551 is a deficient number, since it is larger than the sum of its proper divisors (5139841).

652743551 is a wasteful number, since it uses less digits than its factorization.

652743551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5139840.

The product of its digits is 126000, while the sum is 38.

The square root of 652743551 is about 25548.8463731731. The cubic root of 652743551 is about 867.4561490678.

The spelling of 652743551 in words is "six hundred fifty-two million, seven hundred forty-three thousand, five hundred fifty-one".