154199651 has 2 divisors, whose sum is σ = 154199652. Its totient is φ = 154199650.

The previous prime is 154199623. The next prime is 154199663. The reversal of 154199651 is 156991451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 154199651 - 2⁶ = 154199587 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 154199599 and 154199608.

It is not a weakly prime, because it can be changed into another prime (154199681) 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, 77099825 + 77099826.

It is an arithmetic number, because the mean of its divisors is an integer number (77099826).

Almost surely, 2^154199651 is an apocalyptic number.

154199651 is a deficient number, since it is larger than the sum of its proper divisors (1).

154199651 is an equidigital number, since it uses as much as digits as its factorization.

154199651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48600, while the sum is 41.

The square root of 154199651 is about 12417.7152085237. The cubic root of 154199651 is about 536.2423754854.

The spelling of 154199651 in words is "one hundred fifty-four million, one hundred ninety-nine thousand, six hundred fifty-one".