1601051551 has 48 divisors (see below), whose sum is σ = 1992114432. Its totient is φ = 1278224640.

The previous prime is 1601051537. The next prime is 1601051563. The reversal of 1601051551 is 1551501061.

It is not a de Polignac number, because 1601051551 - 2⁵ = 1601051519 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1601051581) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2033980 + ... + 2034766.

It is an arithmetic number, because the mean of its divisors is an integer number (41502384).

Almost surely, 2^1601051551 is an apocalyptic number.

1601051551 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1601051551 is a deficient number, since it is larger than the sum of its proper divisors (391062881).

1601051551 is a wasteful number, since it uses less digits than its factorization.

1601051551 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892 (or 881 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 25.

The square root of 1601051551 is about 40013.1422285229. The cubic root of 1601051551 is about 1169.8632686540.

The spelling of 1601051551 in words is "one billion, six hundred one million, fifty-one thousand, five hundred fifty-one".