154472987 has 2 divisors, whose sum is σ = 154472988. Its totient is φ = 154472986.

The previous prime is 154472963. The next prime is 154472993. The reversal of 154472987 is 789274451.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 154472987 - 2¹⁰ = 154471963 is a prime.

It is not a weakly prime, because it can be changed into another prime (154472957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77236493 + 77236494.

It is an arithmetic number, because the mean of its divisors is an integer number (77236494).

Almost surely, 2^154472987 is an apocalyptic number.

154472987 is a deficient number, since it is larger than the sum of its proper divisors (1).

154472987 is an equidigital number, since it uses as much as digits as its factorization.

154472987 is an evil number, because the sum of its binary digits is even.

The product of its digits is 564480, while the sum is 47.

The square root of 154472987 is about 12428.7162249365. The cubic root of 154472987 is about 536.5590381665.

The spelling of 154472987 in words is "one hundred fifty-four million, four hundred seventy-two thousand, nine hundred eighty-seven".