121552445 has 16 divisors (see below), whose sum is σ = 166890240. Its totient is φ = 83255424.

The previous prime is 121552429. The next prime is 121552471. The reversal of 121552445 is 544255121.

It is not a de Polignac number, because 121552445 - 2⁴ = 121552429 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 44849 + ... + 47481.

It is an arithmetic number, because the mean of its divisors is an integer number (10430640).

Almost surely, 2^121552445 is an apocalyptic number.

It is an amenable number.

121552445 is a deficient number, since it is larger than the sum of its proper divisors (45337795).

121552445 is a wasteful number, since it uses less digits than its factorization.

121552445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3964.

The product of its digits is 8000, while the sum is 29.

The square root of 121552445 is about 11025.0825393736. The cubic root of 121552445 is about 495.3603402826.

The spelling of 121552445 in words is "one hundred twenty-one million, five hundred fifty-two thousand, four hundred forty-five".