154540214 has 4 divisors (see below), whose sum is σ = 231810324. Its totient is φ = 77270106.

The previous prime is 154540181. The next prime is 154540219. The reversal of 154540214 is 412045451.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (154540219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 38635052 + ... + 38635055.

It is an arithmetic number, because the mean of its divisors is an integer number (57952581).

Almost surely, 2^154540214 is an apocalyptic number.

154540214 is a deficient number, since it is larger than the sum of its proper divisors (77270110).

154540214 is an equidigital number, since it uses as much as digits as its factorization.

154540214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77270109.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 154540214 is about 12431.4204337236. The cubic root of 154540214 is about 536.6368641209.

Adding to 154540214 its reverse (412045451), we get a palindrome (566585665).

The spelling of 154540214 in words is "one hundred fifty-four million, five hundred forty thousand, two hundred fourteen".