198457054 has 4 divisors (see below), whose sum is σ = 297685584. Its totient is φ = 99228526.

The previous prime is 198457037. The next prime is 198457117. The reversal of 198457054 is 450754891.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450754891 = 15737 ⋅28643.

It is a self number, because there is not a number n which added to its sum of digits gives 198457054.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 49614262 + ... + 49614265.

It is an arithmetic number, because the mean of its divisors is an integer number (74421396).

Almost surely, 2^198457054 is an apocalyptic number.

198457054 is a deficient number, since it is larger than the sum of its proper divisors (99228530).

198457054 is an equidigital number, since it uses as much as digits as its factorization.

198457054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99228529.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 198457054 is about 14087.4786246510. The cubic root of 198457054 is about 583.2957965143.

The spelling of 198457054 in words is "one hundred ninety-eight million, four hundred fifty-seven thousand, fifty-four".