155494895 has 4 divisors (see below), whose sum is σ = 186593880. Its totient is φ = 124395912.

The previous prime is 155494811. The next prime is 155494901. The reversal of 155494895 is 598494551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 598494551 = 709 ⋅844139.

It is a cyclic number.

It is not a de Polignac number, because 155494895 - 2⁸ = 155494639 is a prime.

It is a super-2 number, since 2×155494895² = 48357324742122050, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15549485 + ... + 15549494.

It is an arithmetic number, because the mean of its divisors is an integer number (46648470).

Almost surely, 2^155494895 is an apocalyptic number.

155494895 is a deficient number, since it is larger than the sum of its proper divisors (31098985).

155494895 is an equidigital number, since it uses as much as digits as its factorization.

155494895 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31098984.

The product of its digits is 1296000, while the sum is 50.

The square root of 155494895 is about 12469.7592198085. The cubic root of 155494895 is about 537.7396313871.

The spelling of 155494895 in words is "one hundred fifty-five million, four hundred ninety-four thousand, eight hundred ninety-five".