1601557452 has 108 divisors (see below), whose sum is σ = 4467168888. Its totient is φ = 483436800.

The previous prime is 1601557429. The next prime is 1601557487. The reversal of 1601557452 is 2547551061.

1601557452 is a `hidden beast` number, since 1 + 60 + 1 + 557 + 45 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1467427 + ... + 1468517.

Almost surely, 2^1601557452 is an apocalyptic number.

1601557452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1601557452, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2233584444).

1601557452 is an abundant number, since it is smaller than the sum of its proper divisors (2865611436).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1601557452 is a wasteful number, since it uses less digits than its factorization.

1601557452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1460 (or 1444 counting only the distinct ones).

The product of its (nonzero) digits is 42000, while the sum is 36.

The square root of 1601557452 is about 40019.4634146936. The cubic root of 1601557452 is about 1169.9864736547.

The spelling of 1601557452 in words is "one billion, six hundred one million, five hundred fifty-seven thousand, four hundred fifty-two".