154540553 has 2 divisors, whose sum is σ = 154540554. Its totient is φ = 154540552.

The previous prime is 154540537. The next prime is 154540567. The reversal of 154540553 is 355045451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154430329 + 110224 = 12427^2 + 332^2 .

It is a cyclic number.

It is not a de Polignac number, because 154540553 - 2⁴ = 154540537 is a prime.

It is not a weakly prime, because it can be changed into another prime (154540513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77270276 + 77270277.

It is an arithmetic number, because the mean of its divisors is an integer number (77270277).

Almost surely, 2^154540553 is an apocalyptic number.

It is an amenable number.

154540553 is a deficient number, since it is larger than the sum of its proper divisors (1).

154540553 is an equidigital number, since it uses as much as digits as its factorization.

154540553 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30000, while the sum is 32.

The square root of 154540553 is about 12431.4340685216. The cubic root of 154540553 is about 536.6372565102.

The spelling of 154540553 in words is "one hundred fifty-four million, five hundred forty thousand, five hundred fifty-three".