126577497 has 4 divisors (see below), whose sum is σ = 168770000. Its totient is φ = 84384996.

The previous prime is 126577417. The next prime is 126577499. The reversal of 126577497 is 794775621.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 794775621 = 3 ⋅264925207.

It is not a de Polignac number, because 126577497 - 2⁷ = 126577369 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126577499) 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, 21096247 + ... + 21096252.

It is an arithmetic number, because the mean of its divisors is an integer number (42192500).

Almost surely, 2^126577497 is an apocalyptic number.

It is an amenable number.

126577497 is a deficient number, since it is larger than the sum of its proper divisors (42192503).

126577497 is an equidigital number, since it uses as much as digits as its factorization.

126577497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42192502.

The product of its digits is 740880, while the sum is 48.

The square root of 126577497 is about 11250.6665135893. Note that the first 3 decimals coincide. The cubic root of 126577497 is about 502.0945428617.

The spelling of 126577497 in words is "one hundred twenty-six million, five hundred seventy-seven thousand, four hundred ninety-seven".