154021573 has 2 divisors, whose sum is σ = 154021574. Its totient is φ = 154021572.

The previous prime is 154021541. The next prime is 154021583. The reversal of 154021573 is 375120451.

It is a happy number.

154021573 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 148791204 + 5230369 = 12198^2 + 2287^2 .

It is a cyclic number.

It is not a de Polignac number, because 154021573 - 2⁵ = 154021541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154021583) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77010786 + 77010787.

It is an arithmetic number, because the mean of its divisors is an integer number (77010787).

Almost surely, 2^154021573 is an apocalyptic number.

It is an amenable number.

154021573 is a deficient number, since it is larger than the sum of its proper divisors (1).

154021573 is an equidigital number, since it uses as much as digits as its factorization.

154021573 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4200, while the sum is 28.

The square root of 154021573 is about 12410.5428164928. The cubic root of 154021573 is about 536.0358688497.

The spelling of 154021573 in words is "one hundred fifty-four million, twenty-one thousand, five hundred seventy-three".