154201081 has 2 divisors, whose sum is σ = 154201082. Its totient is φ = 154201080.

The previous prime is 154201051. The next prime is 154201109. The reversal of 154201081 is 180102451.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151511481 + 2689600 = 12309^2 + 1640^2 .

It is a cyclic number.

It is not a de Polignac number, because 154201081 - 2²³ = 145812473 is a prime.

It is a super-2 number, since 2×154201081² = 47555946763137122, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (154201001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77100540 + 77100541.

It is an arithmetic number, because the mean of its divisors is an integer number (77100541).

Almost surely, 2^154201081 is an apocalyptic number.

It is an amenable number.

154201081 is a deficient number, since it is larger than the sum of its proper divisors (1).

154201081 is an equidigital number, since it uses as much as digits as its factorization.

154201081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 320, while the sum is 22.

The square root of 154201081 is about 12417.7727874205. The cubic root of 154201081 is about 536.2440331291.

The spelling of 154201081 in words is "one hundred fifty-four million, two hundred one thousand, eighty-one".