155454211 has 4 divisors (see below), whose sum is σ = 169586424. Its totient is φ = 141322000.

The previous prime is 155454193. The next prime is 155454259. The reversal of 155454211 is 112454551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 112454551 = 11 ⋅10223141.

It is a cyclic number.

It is not a de Polignac number, because 155454211 - 2⁹ = 155453699 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155454211.

It is not an unprimeable number, because it can be changed into a prime (155451211) 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, 7066090 + ... + 7066111.

It is an arithmetic number, because the mean of its divisors is an integer number (42396606).

Almost surely, 2^155454211 is an apocalyptic number.

155454211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

155454211 is a deficient number, since it is larger than the sum of its proper divisors (14132213).

155454211 is a wasteful number, since it uses less digits than its factorization.

155454211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14132212.

The product of its digits is 4000, while the sum is 28.

The square root of 155454211 is about 12468.1278065313. The cubic root of 155454211 is about 537.6927288667.

The spelling of 155454211 in words is "one hundred fifty-five million, four hundred fifty-four thousand, two hundred eleven".