155145611 has 2 divisors, whose sum is σ = 155145612. Its totient is φ = 155145610.

The previous prime is 155145593. The next prime is 155145709. The reversal of 155145611 is 116541551.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 155145611 - 2⁶ = 155145547 is a prime.

It is a super-2 number, since 2×155145611² = 48140321225126642, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155141611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77572805 + 77572806.

It is an arithmetic number, because the mean of its divisors is an integer number (77572806).

Almost surely, 2^155145611 is an apocalyptic number.

155145611 is a deficient number, since it is larger than the sum of its proper divisors (1).

155145611 is an equidigital number, since it uses as much as digits as its factorization.

155145611 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 155145611 is about 12455.7461037065. The cubic root of 155145611 is about 537.3366928432.

The spelling of 155145611 in words is "one hundred fifty-five million, one hundred forty-five thousand, six hundred eleven".