545625997 has 4 divisors (see below), whose sum is σ = 623572576. Its totient is φ = 467679420.

The previous prime is 545625979. The next prime is 545626019. The reversal of 545625997 is 799526545.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-545625997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545625497) by changing a digit.

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, 38973279 + ... + 38973292.

It is an arithmetic number, because the mean of its divisors is an integer number (155893144).

Almost surely, 2^545625997 is an apocalyptic number.

It is an amenable number.

545625997 is a deficient number, since it is larger than the sum of its proper divisors (77946579).

545625997 is an equidigital number, since it uses as much as digits as its factorization.

545625997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77946578.

The product of its digits is 3402000, while the sum is 52.

The square root of 545625997 is about 23358.6385947469. The cubic root of 545625997 is about 817.1435396925.

The spelling of 545625997 in words is "five hundred forty-five million, six hundred twenty-five thousand, nine hundred ninety-seven".