545190897 has 4 divisors (see below), whose sum is σ = 726921200. Its totient is φ = 363460596.

The previous prime is 545190871. The next prime is 545190907. The reversal of 545190897 is 798091545.

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 not a de Polignac number, because 545190897 - 2¹⁹ = 544666609 is a prime.

It is a super-2 number, since 2×545190897² = 594466228343329218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (545190097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90865147 + ... + 90865152.

It is an arithmetic number, because the mean of its divisors is an integer number (181730300).

Almost surely, 2^545190897 is an apocalyptic number.

It is an amenable number.

545190897 is a deficient number, since it is larger than the sum of its proper divisors (181730303).

545190897 is a wasteful number, since it uses less digits than its factorization.

545190897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181730302.

The product of its (nonzero) digits is 453600, while the sum is 48.

The square root of 545190897 is about 23349.3232664247. The cubic root of 545190897 is about 816.9262762776.

The spelling of 545190897 in words is "five hundred forty-five million, one hundred ninety thousand, eight hundred ninety-seven".