655016551 has 8 divisors (see below), whose sum is σ = 751698464. Its totient is φ = 559111680.

The previous prime is 655016539. The next prime is 655016567. The reversal of 655016551 is 155610556.

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 655016551 - 2⁷ = 655016423 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 (655016501) 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, 192450 + ... + 195823.

It is an arithmetic number, because the mean of its divisors is an integer number (93962308).

Almost surely, 2^655016551 is an apocalyptic number.

655016551 is a deficient number, since it is larger than the sum of its proper divisors (96681913).

655016551 is a wasteful number, since it uses less digits than its factorization.

655016551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 388521.

The product of its (nonzero) digits is 22500, while the sum is 34.

The square root of 655016551 is about 25593.2911326386. The cubic root of 655016551 is about 868.4618751167.

The spelling of 655016551 in words is "six hundred fifty-five million, sixteen thousand, five hundred fifty-one".