154138651 has 2 divisors, whose sum is σ = 154138652. Its totient is φ = 154138650.

The previous prime is 154138637. The next prime is 154138679. The reversal of 154138651 is 156831451.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154138651 - 2²¹ = 152041499 is a prime.

It is not a weakly prime, because it can be changed into another prime (154138951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77069325 + 77069326.

It is an arithmetic number, because the mean of its divisors is an integer number (77069326).

Almost surely, 2^154138651 is an apocalyptic number.

154138651 is a deficient number, since it is larger than the sum of its proper divisors (1).

154138651 is an equidigital number, since it uses as much as digits as its factorization.

154138651 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14400, while the sum is 34.

The square root of 154138651 is about 12415.2587971415. The cubic root of 154138651 is about 536.1716552665.

The spelling of 154138651 in words is "one hundred fifty-four million, one hundred thirty-eight thousand, six hundred fifty-one".