545211998 has 8 divisors (see below), whose sum is σ = 865924992. Its totient is φ = 256570336.

The previous prime is 545211991. The next prime is 545212013. The reversal of 545211998 is 899112545.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×545211998² = 594512245526304008, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (545211991) 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, 8017790 + ... + 8017857.

It is an arithmetic number, because the mean of its divisors is an integer number (108240624).

Almost surely, 2^545211998 is an apocalyptic number.

545211998 is a deficient number, since it is larger than the sum of its proper divisors (320712994).

545211998 is a wasteful number, since it uses less digits than its factorization.

545211998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16035666.

The product of its digits is 129600, while the sum is 44.

The square root of 545211998 is about 23349.7751166901. The cubic root of 545211998 is about 816.9368155456.

The spelling of 545211998 in words is "five hundred forty-five million, two hundred eleven thousand, nine hundred ninety-eight".