2154403250 has 32 divisors (see below), whose sum is σ = 4036134960. Its totient is φ = 861100800.

The previous prime is 2154403241. The next prime is 2154403259. The reversal of 2154403250 is 523044512.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2154403241) and next prime (2154403259).

It can be written as a sum of positive squares in 8 ways, for example, as 97871449 + 2056531801 = 9893^2 + 45349^2 .

It is a super-2 number, since 2×2154403250² = 9282906727221125000, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2154403259) 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 15 ways as a sum of consecutive naturals, for example, 444842 + ... + 449658.

Almost surely, 2^2154403250 is an apocalyptic number.

2154403250 is a deficient number, since it is larger than the sum of its proper divisors (1881731710).

2154403250 is a wasteful number, since it uses less digits than its factorization.

2154403250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6623 (or 6613 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 2154403250 is about 46415.5496574155. The cubic root of 2154403250 is about 1291.5433823830.

Adding to 2154403250 its reverse (523044512), we get a palindrome (2677447762).

The spelling of 2154403250 in words is "two billion, one hundred fifty-four million, four hundred three thousand, two hundred fifty".