154070621 has 2 divisors, whose sum is σ = 154070622. Its totient is φ = 154070620.

The previous prime is 154070617. The next prime is 154070647. The reversal of 154070621 is 126070451.

It is an a-pointer prime, because the next prime (154070647) can be obtained adding 154070621 to its sum of digits (26).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 143760100 + 10310521 = 11990^2 + 3211^2 .

It is a cyclic number.

It is not a de Polignac number, because 154070621 - 2² = 154070617 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154070681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77035310 + 77035311.

It is an arithmetic number, because the mean of its divisors is an integer number (77035311).

Almost surely, 2^154070621 is an apocalyptic number.

It is an amenable number.

154070621 is a deficient number, since it is larger than the sum of its proper divisors (1).

154070621 is an equidigital number, since it uses as much as digits as its factorization.

154070621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 154070621 is about 12412.5187210332. The cubic root of 154070621 is about 536.0927628212.

The spelling of 154070621 in words is "one hundred fifty-four million, seventy thousand, six hundred twenty-one".