651601055 has 16 divisors (see below), whose sum is σ = 894343680. Its totient is φ = 446452512.

The previous prime is 651601001. The next prime is 651601057. The reversal of 651601055 is 550106156.

It is a cyclic number.

It is not a de Polignac number, because 651601055 - 2²⁰ = 650552479 is a prime.

It is a super-2 number, since 2×651601055² = 849167869754226050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (651601057) 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 15 ways as a sum of consecutive naturals, for example, 41036 + ... + 54654.

It is an arithmetic number, because the mean of its divisors is an integer number (55896480).

Almost surely, 2^651601055 is an apocalyptic number.

651601055 is a deficient number, since it is larger than the sum of its proper divisors (242742625).

651601055 is a wasteful number, since it uses less digits than its factorization.

651601055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14998.

The product of its (nonzero) digits is 4500, while the sum is 29.

The square root of 651601055 is about 25526.4775282451. The cubic root of 651601055 is about 866.9497511306.

The spelling of 651601055 in words is "six hundred fifty-one million, six hundred one thousand, fifty-five".