87521126554 has 16 divisors (see below), whose sum is σ = 139021615656. Its totient is φ = 41181235200.

The previous prime is 87521126527. The next prime is 87521126569. The reversal of 87521126554 is 45562112578.

It can be written as a sum of positive squares in 4 ways, for example, as 87068075329 + 453051225 = 295073^2 + 21285^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119764 + ... + 435184.

Almost surely, 2^87521126554 is an apocalyptic number.

87521126554 is a deficient number, since it is larger than the sum of its proper divisors (51500489102).

87521126554 is a wasteful number, since it uses less digits than its factorization.

87521126554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 323601.

The product of its digits is 672000, while the sum is 46.

The spelling of 87521126554 in words is "eighty-seven billion, five hundred twenty-one million, one hundred twenty-six thousand, five hundred fifty-four".