553172691 has 4 divisors (see below), whose sum is σ = 737563592. Its totient is φ = 368781792.

The previous prime is 553172687. The next prime is 553172693. The reversal of 553172691 is 196271355.

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

It is not a de Polignac number, because 553172691 - 2² = 553172687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (553172693) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 92195446 + ... + 92195451.

It is an arithmetic number, because the mean of its divisors is an integer number (184390898).

Almost surely, 2^553172691 is an apocalyptic number.

553172691 is a deficient number, since it is larger than the sum of its proper divisors (184390901).

553172691 is a wasteful number, since it uses less digits than its factorization.

553172691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 184390900.

The product of its digits is 56700, while the sum is 39.

The square root of 553172691 is about 23519.6235301503. The cubic root of 553172691 is about 820.8936771690.

The spelling of 553172691 in words is "five hundred fifty-three million, one hundred seventy-two thousand, six hundred ninety-one".