121554250 has 64 divisors (see below), whose sum is σ = 247766688. Its totient is φ = 44467200.

The previous prime is 121554227. The next prime is 121554253. The reversal of 121554250 is 52455121.

It can be written as a sum of positive squares in 16 ways, for example, as 1279161 + 120275089 = 1131^2 + 10967^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (121554253) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156864 + ... + 157636.

Almost surely, 2^121554250 is an apocalyptic number.

121554250 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121554250 is an abundant number, since it is smaller than the sum of its proper divisors (126212438).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121554250 is a wasteful number, since it uses less digits than its factorization.

121554250 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844 (or 834 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 25.

The square root of 121554250 is about 11025.1643978673. The cubic root of 121554250 is about 495.3627922310.

The spelling of 121554250 in words is "one hundred twenty-one million, five hundred fifty-four thousand, two hundred fifty".