55945549 has 8 divisors (see below), whose sum is σ = 61089120. Its totient is φ = 50811600.

The previous prime is 55945543. The next prime is 55945567. The reversal of 55945549 is 94554955.

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 55945549 - 2³ = 55945541 is a prime.

It is a super-2 number, since 2×55945549² = 6259808905822802, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 55945499 and 55945508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55945541) 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, 15759 + ... + 18979.

It is an arithmetic number, because the mean of its divisors is an integer number (7636140).

Almost surely, 2^55945549 is an apocalyptic number.

It is an amenable number.

55945549 is a deficient number, since it is larger than the sum of its proper divisors (5143571).

55945549 is a wasteful number, since it uses less digits than its factorization.

55945549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4811.

The product of its digits is 810000, while the sum is 46.

The square root of 55945549 is about 7479.6757282652. The cubic root of 55945549 is about 382.4621951330.

It can be divided in two parts, 559455 and 49, that added together give a square (559504 = 748²).

The spelling of 55945549 in words is "fifty-five million, nine hundred forty-five thousand, five hundred forty-nine".