1603252401 has 8 divisors (see below), whose sum is σ = 2139500064. Its totient is φ = 1067919840.

The previous prime is 1603252381. The next prime is 1603252403. The reversal of 1603252401 is 1042523061.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1603252401 - 2⁹ = 1603251889 is a prime.

It is a super-2 number, since 2×1603252401² = 5140836522624529602, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1603252403) 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, 224676 + ... + 231701.

It is an arithmetic number, because the mean of its divisors is an integer number (267437508).

Almost surely, 2^1603252401 is an apocalyptic number.

It is an amenable number.

1603252401 is a deficient number, since it is larger than the sum of its proper divisors (536247663).

1603252401 is a wasteful number, since it uses less digits than its factorization.

1603252401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 457551.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 1603252401 is about 40040.6343730965. The cubic root of 1603252401 is about 1170.3990654194.

Adding to 1603252401 its reverse (1042523061), we get a palindrome (2645775462).

The spelling of 1603252401 in words is "one billion, six hundred three million, two hundred fifty-two thousand, four hundred one".