55446521 has 8 divisors (see below), whose sum is σ = 61771080. Its totient is φ = 49416192.

The previous prime is 55446487. The next prime is 55446529. The reversal of 55446521 is 12564455.

It can be written as a sum of positive squares in 4 ways, for example, as 18496 + 55428025 = 136^2 + 7445^2 .

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 55446521 - 2¹⁰ = 55445497 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (55446529) 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, 73160 + ... + 73913.

It is an arithmetic number, because the mean of its divisors is an integer number (7721385).

Almost surely, 2^55446521 is an apocalyptic number.

It is an amenable number.

55446521 is a deficient number, since it is larger than the sum of its proper divisors (6324559).

55446521 is a wasteful number, since it uses less digits than its factorization.

55446521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147115.

The product of its digits is 24000, while the sum is 32.

The square root of 55446521 is about 7446.2420723476. The cubic root of 55446521 is about 381.3216238811.

The spelling of 55446521 in words is "fifty-five million, four hundred forty-six thousand, five hundred twenty-one".