154402229 has 2 divisors, whose sum is σ = 154402230. Its totient is φ = 154402228.

The previous prime is 154402153. The next prime is 154402247. The reversal of 154402229 is 922204451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 153016900 + 1385329 = 12370^2 + 1177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-154402229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (154402249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77201114 + 77201115.

It is an arithmetic number, because the mean of its divisors is an integer number (77201115).

Almost surely, 2^154402229 is an apocalyptic number.

It is an amenable number.

154402229 is a deficient number, since it is larger than the sum of its proper divisors (1).

154402229 is an equidigital number, since it uses as much as digits as its factorization.

154402229 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5760, while the sum is 29.

The square root of 154402229 is about 12425.8693458446. The cubic root of 154402229 is about 536.4771001234.

The spelling of 154402229 in words is "one hundred fifty-four million, four hundred two thousand, two hundred twenty-nine".