55745245 has 4 divisors (see below), whose sum is σ = 66894300. Its totient is φ = 44596192.

The previous prime is 55745237. The next prime is 55745257. The reversal of 55745245 is 54254755.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 34234201 + 21511044 = 5851^2 + 4638^2 .

It is a cyclic number.

It is not a de Polignac number, because 55745245 - 2³ = 55745237 is a prime.

It is a super-2 number, since 2×55745245² = 6215064680220050, which contains 22 as substring.

It is a congruent number.

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, 5574520 + ... + 5574529.

It is an arithmetic number, because the mean of its divisors is an integer number (16723575).

Almost surely, 2^55745245 is an apocalyptic number.

It is an amenable number.

55745245 is a deficient number, since it is larger than the sum of its proper divisors (11149055).

55745245 is a wasteful number, since it uses less digits than its factorization.

55745245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11149054.

The product of its digits is 140000, while the sum is 37.

The square root of 55745245 is about 7466.2738363926. The cubic root of 55745245 is about 382.0052012669.

The spelling of 55745245 in words is "fifty-five million, seven hundred forty-five thousand, two hundred forty-five".