126525621 has 16 divisors (see below), whose sum is σ = 171763200. Its totient is φ = 82829040.

The previous prime is 126525583. The next prime is 126525643.

126525621 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 126525621 - 2⁷ = 126525493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (126525661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59230 + ... + 61328.

It is an arithmetic number, because the mean of its divisors is an integer number (10735200).

Almost surely, 2^126525621 is an apocalyptic number.

It is an amenable number.

126525621 is a deficient number, since it is larger than the sum of its proper divisors (45237579).

126525621 is a wasteful number, since it uses less digits than its factorization.

126525621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2456.

The product of its digits is 7200, while the sum is 30.

The square root of 126525621 is about 11248.3608139142. The cubic root of 126525621 is about 502.0259413693.

The spelling of 126525621 in words is "one hundred twenty-six million, five hundred twenty-five thousand, six hundred twenty-one".