121654545 has 16 divisors (see below), whose sum is σ = 196836480. Its totient is φ = 64152704.

The previous prime is 121654529. The next prime is 121654597. The reversal of 121654545 is 545456121.

It is a cyclic number.

It is not a de Polignac number, because 121654545 - 2⁴ = 121654529 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44229 + ... + 46898.

It is an arithmetic number, because the mean of its divisors is an integer number (12302280).

Almost surely, 2^121654545 is an apocalyptic number.

121654545 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121654545 is a deficient number, since it is larger than the sum of its proper divisors (75181935).

121654545 is an equidigital number, since it uses as much as digits as its factorization.

121654545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91224.

The product of its digits is 24000, while the sum is 33.

The square root of 121654545 is about 11029.7119182688. The cubic root of 121654545 is about 495.4989968560.

The spelling of 121654545 in words is "one hundred twenty-one million, six hundred fifty-four thousand, five hundred forty-five".