145556111 has 2 divisors, whose sum is σ = 145556112. Its totient is φ = 145556110.

The previous prime is 145556107. The next prime is 145556137. The reversal of 145556111 is 111655541.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 145556111 - 2² = 145556107 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (145556171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 72778055 + 72778056.

It is an arithmetic number, because the mean of its divisors is an integer number (72778056).

Almost surely, 2^145556111 is an apocalyptic number.

145556111 is a deficient number, since it is larger than the sum of its proper divisors (1).

145556111 is an equidigital number, since it uses as much as digits as its factorization.

145556111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3000, while the sum is 29.

The square root of 145556111 is about 12064.6637333993. The cubic root of 145556111 is about 526.0295575828.

The spelling of 145556111 in words is "one hundred forty-five million, five hundred fifty-six thousand, one hundred eleven".