154966531 has 2 divisors, whose sum is σ = 154966532. Its totient is φ = 154966530.

The previous prime is 154966529. The next prime is 154966547. The reversal of 154966531 is 135669451.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 154966531 - 2¹ = 154966529 is a prime.

It is a super-2 number, since 2×154966531² = 48029251460347922, which contains 22 as substring.

Together with 154966529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (154966501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77483265 + 77483266.

It is an arithmetic number, because the mean of its divisors is an integer number (77483266).

Almost surely, 2^154966531 is an apocalyptic number.

154966531 is a deficient number, since it is larger than the sum of its proper divisors (1).

154966531 is an equidigital number, since it uses as much as digits as its factorization.

154966531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 97200, while the sum is 40.

The square root of 154966531 is about 12448.5553780348. Note that the first 3 decimals coincide. The cubic root of 154966531 is about 537.1298692840.

The spelling of 154966531 in words is "one hundred fifty-four million, nine hundred sixty-six thousand, five hundred thirty-one".