121546557 has 36 divisors (see below), whose sum is σ = 194201280. Its totient is φ = 73199280.

The previous prime is 121546541. The next prime is 121546561. The reversal of 121546557 is 755645121.

It is not a de Polignac number, because 121546557 - 2⁴ = 121546541 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121546507) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 260038 + ... + 260504.

It is an arithmetic number, because the mean of its divisors is an integer number (5394480).

Almost surely, 2^121546557 is an apocalyptic number.

It is an amenable number.

121546557 is a deficient number, since it is larger than the sum of its proper divisors (72654723).

121546557 is a wasteful number, since it uses less digits than its factorization.

121546557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 720 counting only the distinct ones).

The product of its digits is 42000, while the sum is 36.

The square root of 121546557 is about 11024.8155086605. The cubic root of 121546557 is about 495.3523417357.

The spelling of 121546557 in words is "one hundred twenty-one million, five hundred forty-six thousand, five hundred fifty-seven".