149554553 has 2 divisors, whose sum is σ = 149554554. Its totient is φ = 149554552.

The previous prime is 149554549. The next prime is 149554583. The reversal of 149554553 is 355455941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 141443449 + 8111104 = 11893^2 + 2848^2 .

It is a cyclic number.

It is not a de Polignac number, because 149554553 - 2² = 149554549 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 149554553.

It is not a weakly prime, because it can be changed into another prime (149554513) 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, 74777276 + 74777277.

It is an arithmetic number, because the mean of its divisors is an integer number (74777277).

Almost surely, 2^149554553 is an apocalyptic number.

It is an amenable number.

149554553 is a deficient number, since it is larger than the sum of its proper divisors (1).

149554553 is an equidigital number, since it uses as much as digits as its factorization.

149554553 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 270000, while the sum is 41.

The square root of 149554553 is about 12229.2498952307. The cubic root of 149554553 is about 530.8028096858.

The spelling of 149554553 in words is "one hundred forty-nine million, five hundred fifty-four thousand, five hundred fifty-three".