155346497 has 4 divisors (see below), whose sum is σ = 155738196. Its totient is φ = 154954800.

The previous prime is 155346491. The next prime is 155346511. The reversal of 155346497 is 794643551.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 794643551 = 13 ⋅61126427.

It can be written as a sum of positive squares in 2 ways, for example, as 137334961 + 18011536 = 11719^2 + 4244^2 .

It is a cyclic number.

It is not a de Polignac number, because 155346497 - 2²⁴ = 138569281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (155346491) 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, 195254 + ... + 196047.

It is an arithmetic number, because the mean of its divisors is an integer number (38934549).

Almost surely, 2^155346497 is an apocalyptic number.

It is an amenable number.

155346497 is a deficient number, since it is larger than the sum of its proper divisors (391699).

155346497 is an equidigital number, since it uses as much as digits as its factorization.

155346497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 391698.

The product of its digits is 453600, while the sum is 44.

The square root of 155346497 is about 12463.8074840716. The cubic root of 155346497 is about 537.5685113319.

The spelling of 155346497 in words is "one hundred fifty-five million, three hundred forty-six thousand, four hundred ninety-seven".