1655051601 has 32 divisors (see below), whose sum is σ = 2657996800. Its totient is φ = 894862080.

The previous prime is 1655051557. The next prime is 1655051603. The reversal of 1655051601 is 1061505561.

It is not a de Polignac number, because 1655051601 - 2⁶ = 1655051537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1655051603) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 400536 + ... + 404646.

It is an arithmetic number, because the mean of its divisors is an integer number (83062400).

Almost surely, 2^1655051601 is an apocalyptic number.

It is an amenable number.

1655051601 is a deficient number, since it is larger than the sum of its proper divisors (1002945199).

1655051601 is a wasteful number, since it uses less digits than its factorization.

1655051601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5149.

The product of its (nonzero) digits is 4500, while the sum is 30.

The square root of 1655051601 is about 40682.3254128866. The cubic root of 1655051601 is about 1182.8704418615.

The spelling of 1655051601 in words is "one billion, six hundred fifty-five million, fifty-one thousand, six hundred one".