1021359451 has 8 divisors (see below), whose sum is σ = 1168556544. Its totient is φ = 874484520.

The previous prime is 1021359419. The next prime is 1021359481. The reversal of 1021359451 is 1549531201.

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

It is not a de Polignac number, because 1021359451 - 2⁵ = 1021359419 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1021359481) 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 7 ways as a sum of consecutive naturals, for example, 73705 + ... + 86458.

It is an arithmetic number, because the mean of its divisors is an integer number (146069568).

Almost surely, 2^1021359451 is an apocalyptic number.

1021359451 is a deficient number, since it is larger than the sum of its proper divisors (147197093).

1021359451 is an equidigital number, since it uses as much as digits as its factorization.

1021359451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 161081.

The product of its (nonzero) digits is 5400, while the sum is 31.

The square root of 1021359451 is about 31958.7147895531. The cubic root of 1021359451 is about 1007.0697182995.

The spelling of 1021359451 in words is "one billion, twenty-one million, three hundred fifty-nine thousand, four hundred fifty-one".