55010521 has 8 divisors (see below), whose sum is σ = 58328424. Its totient is φ = 51701760.

The previous prime is 55010507. The next prime is 55010531. The reversal of 55010521 is 12501055.

It can be written as a sum of positive squares in 4 ways, for example, as 546121 + 54464400 = 739^2 + 7380^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 55010521 - 2⁵ = 55010489 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55010531) 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, 13141 + ... + 16813.

It is an arithmetic number, because the mean of its divisors is an integer number (7291053).

Almost surely, 2^55010521 is an apocalyptic number.

It is an amenable number.

55010521 is a deficient number, since it is larger than the sum of its proper divisors (3317903).

55010521 is a wasteful number, since it uses less digits than its factorization.

55010521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571.

The product of its (nonzero) digits is 250, while the sum is 19.

The square root of 55010521 is about 7416.9077788523. The cubic root of 55010521 is about 380.3194935379.

Adding to 55010521 its reverse (12501055), we get a palindrome (67511576).

The spelling of 55010521 in words is "fifty-five million, ten thousand, five hundred twenty-one".