155226097 has 4 divisors (see below), whose sum is σ = 167166580. Its totient is φ = 143285616.

The previous prime is 155226089. The next prime is 155226119. The reversal of 155226097 is 790622551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 790622551 = 479 ⋅1650569.

It can be written as a sum of positive squares in 2 ways, for example, as 8549776 + 146676321 = 2924^2 + 12111^2 .

It is a cyclic number.

It is not a de Polignac number, because 155226097 - 2³ = 155226089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155226017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5970222 + ... + 5970247.

It is an arithmetic number, because the mean of its divisors is an integer number (41791645).

Almost surely, 2^155226097 is an apocalyptic number.

It is an amenable number.

155226097 is a deficient number, since it is larger than the sum of its proper divisors (11940483).

155226097 is a wasteful number, since it uses less digits than its factorization.

155226097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11940482.

The product of its (nonzero) digits is 37800, while the sum is 37.

The square root of 155226097 is about 12458.9765631050. The cubic root of 155226097 is about 537.4295961148.

The spelling of 155226097 in words is "one hundred fifty-five million, two hundred twenty-six thousand, ninety-seven".