1053634621 has 8 divisors (see below), whose sum is σ = 1139556600. Its totient is φ = 968408832.

The previous prime is 1053634609. The next prime is 1053634627. The reversal of 1053634621 is 1264363501.

It can be written as a sum of positive squares in 4 ways, for example, as 63840100 + 989794521 = 7990^2 + 31461^2 .

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 1053634621 - 2¹³ = 1053626429 is a prime.

It is a super-2 number, since 2×1053634621² = 2220291829139627282, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1053634627) 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, 170896 + ... + 176953.

It is an arithmetic number, because the mean of its divisors is an integer number (142444575).

Almost surely, 2^1053634621 is an apocalyptic number.

It is an amenable number.

1053634621 is a deficient number, since it is larger than the sum of its proper divisors (85921979).

1053634621 is a wasteful number, since it uses less digits than its factorization.

1053634621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348095.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 1053634621 is about 32459.7384616697. The cubic root of 1053634621 is about 1017.5677730556.

The spelling of 1053634621 in words is "one billion, fifty-three million, six hundred thirty-four thousand, six hundred twenty-one".