154091091 has 32 divisors (see below), whose sum is σ = 258048000. Its totient is φ = 79454880.

The previous prime is 154091071. The next prime is 154091117. The reversal of 154091091 is 190190451.

It is not a de Polignac number, because 154091091 - 2¹⁰ = 154090067 is a prime.

It is not an unprimeable number, because it can be changed into a prime (154091071) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29710 + ... + 34508.

It is an arithmetic number, because the mean of its divisors is an integer number (8064000).

Almost surely, 2^154091091 is an apocalyptic number.

154091091 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

154091091 is a deficient number, since it is larger than the sum of its proper divisors (103956909).

154091091 is a wasteful number, since it uses less digits than its factorization.

154091091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4959.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 154091091 is about 12413.3432644071. The cubic root of 154091091 is about 536.1165037370.

The spelling of 154091091 in words is "one hundred fifty-four million, ninety-one thousand, ninety-one".