55431045 has 24 divisors (see below), whose sum is σ = 96474456. Its totient is φ = 29442048.

The previous prime is 55431041. The next prime is 55431059. The reversal of 55431045 is 54013455.

55431045 is a `hidden beast` number, since 554 + 3 + 104 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 31606884 + 23824161 = 5622^2 + 4881^2 .

It is not a de Polignac number, because 55431045 - 2² = 55431041 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55431041) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9169 + ... + 13961.

It is an arithmetic number, because the mean of its divisors is an integer number (4019769).

Almost surely, 2^55431045 is an apocalyptic number.

It is an amenable number.

55431045 is a deficient number, since it is larger than the sum of its proper divisors (41043411).

55431045 is a wasteful number, since it uses less digits than its factorization.

55431045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5061 (or 5058 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 55431045 is about 7445.2028179224. The cubic root of 55431045 is about 381.2861429499.

The spelling of 55431045 in words is "fifty-five million, four hundred thirty-one thousand, forty-five".