55523513 has 4 divisors (see below), whose sum is σ = 58789620. Its totient is φ = 52257408.

The previous prime is 55523467. The next prime is 55523527. The reversal of 55523513 is 31532555.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31532555 = 5 ⋅6306511.

It can be written as a sum of positive squares in 2 ways, for example, as 37613689 + 17909824 = 6133^2 + 4232^2 .

It is a cyclic number.

It is not a de Polignac number, because 55523513 - 2¹⁴ = 55507129 is a prime.

It is a super-2 number, since 2×55523513² = 6165720991722338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55523563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1633028 + ... + 1633061.

It is an arithmetic number, because the mean of its divisors is an integer number (14697405).

Almost surely, 2^55523513 is an apocalyptic number.

It is an amenable number.

55523513 is a deficient number, since it is larger than the sum of its proper divisors (3266107).

55523513 is a wasteful number, since it uses less digits than its factorization.

55523513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3266106.

The product of its digits is 11250, while the sum is 29.

The square root of 55523513 is about 7451.4101350013. The cubic root of 55523513 is about 381.4980409368.

The spelling of 55523513 in words is "fifty-five million, five hundred twenty-three thousand, five hundred thirteen".