270198551 has 4 divisors (see below), whose sum is σ = 308798352. Its totient is φ = 231598752.

The previous prime is 270198529. The next prime is 270198553. The reversal of 270198551 is 155891072.

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

It is not a de Polignac number, because 270198551 - 2¹⁴ = 270182167 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 (270198553) 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, 19299890 + ... + 19299903.

It is an arithmetic number, because the mean of its divisors is an integer number (77199588).

Almost surely, 2^270198551 is an apocalyptic number.

270198551 is a deficient number, since it is larger than the sum of its proper divisors (38599801).

270198551 is an equidigital number, since it uses as much as digits as its factorization.

270198551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38599800.

The product of its (nonzero) digits is 25200, while the sum is 38.

The square root of 270198551 is about 16437.7173293618. The cubic root of 270198551 is about 646.4887997315.

The spelling of 270198551 in words is "two hundred seventy million, one hundred ninety-eight thousand, five hundred fifty-one".