1021532453 has 8 divisors (see below), whose sum is σ = 1057162080. Its totient is φ = 985929840.

The previous prime is 1021532437. The next prime is 1021532497. The reversal of 1021532453 is 3542351201.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1021532453 - 2⁴ = 1021532437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021532053) 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, 97898 + ... + 107828.

It is an arithmetic number, because the mean of its divisors is an integer number (132145260).

Almost surely, 2^1021532453 is an apocalyptic number.

It is an amenable number.

1021532453 is a deficient number, since it is larger than the sum of its proper divisors (35629627).

1021532453 is an equidigital number, since it uses as much as digits as its factorization.

1021532453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13507.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 1021532453 is about 31961.4213232140. The cubic root of 1021532453 is about 1007.1265756051.

Adding to 1021532453 its reverse (3542351201), we get a palindrome (4563883654).

The spelling of 1021532453 in words is "one billion, twenty-one million, five hundred thirty-two thousand, four hundred fifty-three".