121052557 has 2 divisors, whose sum is σ = 121052558. Its totient is φ = 121052556.

The previous prime is 121052543. The next prime is 121052579. The reversal of 121052557 is 755250121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 110901961 + 10150596 = 10531^2 + 3186^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121052557 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121052507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60526278 + 60526279.

It is an arithmetic number, because the mean of its divisors is an integer number (60526279).

Almost surely, 2^121052557 is an apocalyptic number.

It is an amenable number.

121052557 is a deficient number, since it is larger than the sum of its proper divisors (1).

121052557 is an equidigital number, since it uses as much as digits as its factorization.

121052557 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3500, while the sum is 28.

The square root of 121052557 is about 11002.3886951880. The cubic root of 121052557 is about 494.6803459474.

The spelling of 121052557 in words is "one hundred twenty-one million, fifty-two thousand, five hundred fifty-seven".