126615481 has 4 divisors (see below), whose sum is σ = 126686464. Its totient is φ = 126544500.

The previous prime is 126615469. The next prime is 126615491. The reversal of 126615481 is 184516621.

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: 184516621 = 7523 ⋅24527.

It is a cyclic number.

It is not a de Polignac number, because 126615481 - 2¹³ = 126607289 is a prime.

It is a super-2 number, since 2×126615481² = 32062960057722722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (126615431) 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, 32745 + ... + 36406.

It is an arithmetic number, because the mean of its divisors is an integer number (31671616).

Almost surely, 2^126615481 is an apocalyptic number.

It is an amenable number.

126615481 is a deficient number, since it is larger than the sum of its proper divisors (70983).

126615481 is an equidigital number, since it uses as much as digits as its factorization.

126615481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70982.

The product of its digits is 11520, while the sum is 34.

The square root of 126615481 is about 11252.3544647331. The cubic root of 126615481 is about 502.1447615083.

The spelling of 126615481 in words is "one hundred twenty-six million, six hundred fifteen thousand, four hundred eighty-one".