155236097 has 4 divisors (see below), whose sum is σ = 156278100. Its totient is φ = 154194096.

The previous prime is 155236087. The next prime is 155236121. The reversal of 155236097 is 790632551.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8317456 + 146918641 = 2884^2 + 12121^2 .

It is a cyclic number.

It is not a de Polignac number, because 155236097 - 2¹⁸ = 154973953 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 155236097.

It is not an unprimeable number, because it can be changed into a prime (155236007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520778 + ... + 521075.

It is an arithmetic number, because the mean of its divisors is an integer number (39069525).

Almost surely, 2^155236097 is an apocalyptic number.

It is an amenable number.

155236097 is a deficient number, since it is larger than the sum of its proper divisors (1042003).

155236097 is a wasteful number, since it uses less digits than its factorization.

155236097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042002.

The product of its (nonzero) digits is 56700, while the sum is 38.

The square root of 155236097 is about 12459.3778737142. The cubic root of 155236097 is about 537.4411366583.

The spelling of 155236097 in words is "one hundred fifty-five million, two hundred thirty-six thousand, ninety-seven".