1497091223 has 4 divisors (see below), whose sum is σ = 1498442280. Its totient is φ = 1495740168.

The previous prime is 1497091181. The next prime is 1497091231. The reversal of 1497091223 is 3221907941.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1497091223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1497091283) 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, 673865 + ... + 676082.

It is an arithmetic number, because the mean of its divisors is an integer number (374610570).

Almost surely, 2^1497091223 is an apocalyptic number.

1497091223 is a deficient number, since it is larger than the sum of its proper divisors (1351057).

1497091223 is a wasteful number, since it uses less digits than its factorization.

1497091223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351056.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 1497091223 is about 38692.2630896669. The cubic root of 1497091223 is about 1143.9738263100.

The spelling of 1497091223 in words is "one billion, four hundred ninety-seven million, ninety-one thousand, two hundred twenty-three".