121352545 has 24 divisors (see below), whose sum is σ = 156076344. Its totient is φ = 90556416.

The previous prime is 121352537. The next prime is 121352551. The reversal of 121352545 is 545253121.

It can be written as a sum of positive squares in 12 ways, for example, as 26718561 + 94633984 = 5169^2 + 9728^2 .

It is not a de Polignac number, because 121352545 - 2³ = 121352537 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 197659 + ... + 198271.

It is an arithmetic number, because the mean of its divisors is an integer number (6503181).

Almost surely, 2^121352545 is an apocalyptic number.

It is an amenable number.

121352545 is a deficient number, since it is larger than the sum of its proper divisors (34723799).

121352545 is a wasteful number, since it uses less digits than its factorization.

121352545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 789 (or 772 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 121352545 is about 11016.0131172761. The cubic root of 121352545 is about 495.0886417456.

The spelling of 121352545 in words is "one hundred twenty-one million, three hundred fifty-two thousand, five hundred forty-five".