121803552 has 72 divisors (see below), whose sum is σ = 373034844. Its totient is φ = 37476864.

The previous prime is 121803533. The next prime is 121803559. The reversal of 121803552 is 255308121.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 110754576 + 11048976 = 10524^2 + 3324^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×121803552² = 29672210559633408, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121803559) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12523 + ... + 20010.

Almost surely, 2^121803552 is an apocalyptic number.

121803552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121803552 is an abundant number, since it is smaller than the sum of its proper divisors (251231292).

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

121803552 is a wasteful number, since it uses less digits than its factorization.

121803552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32562 (or 32551 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 121803552 is about 11036.4646513274. The cubic root of 121803552 is about 495.7012161679.

The spelling of 121803552 in words is "one hundred twenty-one million, eight hundred three thousand, five hundred fifty-two".