55243545 has 32 divisors (see below), whose sum is σ = 106337280. Its totient is φ = 23924160.

The previous prime is 55243541. The next prime is 55243597. The reversal of 55243545 is 54534255.

It is not a de Polignac number, because 55243545 - 2² = 55243541 is a prime.

It is not an unprimeable number, because it can be changed into a prime (55243541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11851 + ... + 15840.

It is an arithmetic number, because the mean of its divisors is an integer number (3323040).

Almost surely, 2^55243545 is an apocalyptic number.

It is an amenable number.

55243545 is a deficient number, since it is larger than the sum of its proper divisors (51093735).

55243545 is a wasteful number, since it uses less digits than its factorization.

55243545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27725.

The product of its digits is 60000, while the sum is 33.

The square root of 55243545 is about 7432.6001506875. The cubic root of 55243545 is about 380.8557468796.

The spelling of 55243545 in words is "fifty-five million, two hundred forty-three thousand, five hundred forty-five".