1452561021 has 12 divisors (see below), whose sum is σ = 2189367648. Its totient is φ = 926270664.

The previous prime is 1452561007. The next prime is 1452561023. The reversal of 1452561021 is 1201652541.

1452561021 is a `hidden beast` number, since 1 + 4 + 5 + 25 + 610 + 21 = 666.

It is not a de Polignac number, because 1452561021 - 2²¹ = 1450463869 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1452561023) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3508395 + ... + 3508808.

It is an arithmetic number, because the mean of its divisors is an integer number (182447304).

Almost surely, 2^1452561021 is an apocalyptic number.

It is an amenable number.

1452561021 is a deficient number, since it is larger than the sum of its proper divisors (736806627).

1452561021 is a wasteful number, since it uses less digits than its factorization.

1452561021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7017232 (or 7017229 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 1452561021 is about 38112.4785470586. The cubic root of 1452561021 is about 1132.5171706240.

The spelling of 1452561021 in words is "one billion, four hundred fifty-two million, five hundred sixty-one thousand, twenty-one".