55321045 has 8 divisors (see below), whose sum is σ = 71491896. Its totient is φ = 40852416.

The previous prime is 55321039. The next prime is 55321051. The reversal of 55321045 is 54012355.

It is an interprime number because it is at equal distance from previous prime (55321039) and next prime (55321051).

It can be written as a sum of positive squares in 4 ways, for example, as 531441 + 54789604 = 729^2 + 7402^2 .

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 55321045 - 2¹¹ = 55318997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 425482 + ... + 425611.

It is an arithmetic number, because the mean of its divisors is an integer number (8936487).

Almost surely, 2^55321045 is an apocalyptic number.

It is an amenable number.

55321045 is a deficient number, since it is larger than the sum of its proper divisors (16170851).

55321045 is a wasteful number, since it uses less digits than its factorization.

55321045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 851111.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 55321045 is about 7437.8118422020. The cubic root of 55321045 is about 381.0337618164.

The spelling of 55321045 in words is "fifty-five million, three hundred twenty-one thousand, forty-five".