1532252121 has 4 divisors (see below), whose sum is σ = 2043002832. Its totient is φ = 1021501412.

The previous prime is 1532252083. The next prime is 1532252147. The reversal of 1532252121 is 1212522351.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1532252121 - 2¹³ = 1532243929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1532252091 and 1532252100.

It is not an unprimeable number, because it can be changed into a prime (1532252171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 255375351 + ... + 255375356.

It is an arithmetic number, because the mean of its divisors is an integer number (510750708).

Almost surely, 2^1532252121 is an apocalyptic number.

It is an amenable number.

1532252121 is a deficient number, since it is larger than the sum of its proper divisors (510750711).

1532252121 is an equidigital number, since it uses as much as digits as its factorization.

1532252121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510750710.

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

The square root of 1532252121 is about 39143.9921443892. The cubic root of 1532252121 is about 1152.8604584568.

Adding to 1532252121 its reverse (1212522351), we get a palindrome (2744774472).

The spelling of 1532252121 in words is "one billion, five hundred thirty-two million, two hundred fifty-two thousand, one hundred twenty-one".