551132545 has 4 divisors (see below), whose sum is σ = 661359060. Its totient is φ = 440906032.

The previous prime is 551132521. The next prime is 551132551. The reversal of 551132545 is 545231155.

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 73753744 + 477378801 = 8588^2 + 21849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-551132545 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 55113250 + ... + 55113259.

It is an arithmetic number, because the mean of its divisors is an integer number (165339765).

Almost surely, 2^551132545 is an apocalyptic number.

It is an amenable number.

551132545 is a deficient number, since it is larger than the sum of its proper divisors (110226515).

551132545 is a wasteful number, since it uses less digits than its factorization.

551132545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110226514.

The product of its digits is 15000, while the sum is 31.

The square root of 551132545 is about 23476.2123222636. The cubic root of 551132545 is about 819.8832597045.

The spelling of 551132545 in words is "five hundred fifty-one million, one hundred thirty-two thousand, five hundred forty-five".