2101532451 has 16 divisors (see below), whose sum is σ = 2833106304. Its totient is φ = 1385512704.

The previous prime is 2101532443. The next prime is 2101532453. The reversal of 2101532451 is 1542351012.

It is a happy number.

It is not a de Polignac number, because 2101532451 - 2³ = 2101532443 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2101532453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 604420 + ... + 607886.

It is an arithmetic number, because the mean of its divisors is an integer number (177069144).

Almost surely, 2^2101532451 is an apocalyptic number.

2101532451 is a deficient number, since it is larger than the sum of its proper divisors (731573853).

2101532451 is a wasteful number, since it uses less digits than its factorization.

2101532451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5650.

The product of its (nonzero) digits is 1200, while the sum is 24.

The square root of 2101532451 is about 45842.4743114941. The cubic root of 2101532451 is about 1280.8905852515.

Adding to 2101532451 its reverse (1542351012), we get a palindrome (3643883463).

The spelling of 2101532451 in words is "two billion, one hundred one million, five hundred thirty-two thousand, four hundred fifty-one".