1254552021 has 12 divisors (see below), whose sum is σ = 1813693440. Its totient is φ = 835646760.

The previous prime is 1254552011. The next prime is 1254552053. The reversal of 1254552021 is 1202554521.

1254552021 is a `hidden beast` number, since 1 + 2 + 5 + 455 + 202 + 1 = 666.

It is not a de Polignac number, because 1254552021 - 2¹⁸ = 1254289877 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1254552001) 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 11 ways as a sum of consecutive naturals, for example, 48981 + ... + 70058.

It is an arithmetic number, because the mean of its divisors is an integer number (151141120).

Almost surely, 2^1254552021 is an apocalyptic number.

It is an amenable number.

1254552021 is a deficient number, since it is larger than the sum of its proper divisors (559141419).

1254552021 is a wasteful number, since it uses less digits than its factorization.

1254552021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120216 (or 120213 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 27.

The square root of 1254552021 is about 35419.6558566003. The cubic root of 1254552021 is about 1078.5233652151.

The spelling of 1254552021 in words is "one billion, two hundred fifty-four million, five hundred fifty-two thousand, twenty-one".