55344545 has 4 divisors (see below), whose sum is σ = 66413460. Its totient is φ = 44275632.

The previous prime is 55344539. The next prime is 55344593. The reversal of 55344545 is 54544355.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54544355 = 5 ⋅10908871.

It can be written as a sum of positive squares in 2 ways, for example, as 8133904 + 47210641 = 2852^2 + 6871^2 .

It is a cyclic number.

It is not a de Polignac number, because 55344545 - 2¹⁰ = 55343521 is a prime.

It is a super-2 number, since 2×55344545² = 6126037322514050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5534450 + ... + 5534459.

It is an arithmetic number, because the mean of its divisors is an integer number (16603365).

Almost surely, 2^55344545 is an apocalyptic number.

It is an amenable number.

55344545 is a deficient number, since it is larger than the sum of its proper divisors (11068915).

55344545 is a wasteful number, since it uses less digits than its factorization.

55344545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11068914.

The product of its digits is 120000, while the sum is 35.

The square root of 55344545 is about 7439.3914401650. The cubic root of 55344545 is about 381.0877076870.

The spelling of 55344545 in words is "fifty-five million, three hundred forty-four thousand, five hundred forty-five".