154561933 has 2 divisors, whose sum is σ = 154561934. Its totient is φ = 154561932.

The previous prime is 154561871. The next prime is 154561937. The reversal of 154561933 is 339165451.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 111239209 + 43322724 = 10547^2 + 6582^2 .

It is a cyclic number.

It is not a de Polignac number, because 154561933 - 2¹³ = 154553741 is a prime.

It is a super-2 number, since 2×154561933² = 47778782265392978, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 154561892 and 154561901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154561937) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77280966 + 77280967.

It is an arithmetic number, because the mean of its divisors is an integer number (77280967).

Almost surely, 2^154561933 is an apocalyptic number.

It is an amenable number.

154561933 is a deficient number, since it is larger than the sum of its proper divisors (1).

154561933 is an equidigital number, since it uses as much as digits as its factorization.

154561933 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 37.

The square root of 154561933 is about 12432.2939556624. The cubic root of 154561933 is about 536.6620024971.

The spelling of 154561933 in words is "one hundred fifty-four million, five hundred sixty-one thousand, nine hundred thirty-three".