128553707 has 2 divisors, whose sum is σ = 128553708. Its totient is φ = 128553706.

The previous prime is 128553671. The next prime is 128553721. The reversal of 128553707 is 707355821.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 128553707 - 2²⁴ = 111776491 is a prime.

It is not a weakly prime, because it can be changed into another prime (128553757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64276853 + 64276854.

It is an arithmetic number, because the mean of its divisors is an integer number (64276854).

Almost surely, 2^128553707 is an apocalyptic number.

128553707 is a deficient number, since it is larger than the sum of its proper divisors (1).

128553707 is an equidigital number, since it uses as much as digits as its factorization.

128553707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 58800, while the sum is 38.

The square root of 128553707 is about 11338.1527155000. The cubic root of 128553707 is about 504.6940695155.

The spelling of 128553707 in words is "one hundred twenty-eight million, five hundred fifty-three thousand, seven hundred seven".