121551572 has 24 divisors (see below), whose sum is σ = 217183680. Its totient is φ = 59512640.

The previous prime is 121551559. The next prime is 121551629. The reversal of 121551572 is 275155121.

It is a super-3 number, since 3×121551572³ (a number of 25 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36497 + ... + 39687.

It is an arithmetic number, because the mean of its divisors is an integer number (9049320).

Almost surely, 2^121551572 is an apocalyptic number.

It is an amenable number.

121551572 is a deficient number, since it is larger than the sum of its proper divisors (95632108).

121551572 is a wasteful number, since it uses less digits than its factorization.

121551572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3391 (or 3389 counting only the distinct ones).

The product of its digits is 3500, while the sum is 29.

The square root of 121551572 is about 11025.0429477622. The cubic root of 121551572 is about 495.3591543730.

The spelling of 121551572 in words is "one hundred twenty-one million, five hundred fifty-one thousand, five hundred seventy-two".