1233555552 has 72 divisors (see below), whose sum is σ = 3511380600. Its totient is φ = 410780160.

The previous prime is 1233555551. The next prime is 1233555553. The reversal of 1233555552 is 2555553321.

1233555552 is a `hidden beast` number, since 1 + 23 + 35 + 55 + 552 = 666.

It is an interprime number because it is at equal distance from previous prime (1233555551) and next prime (1233555553).

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

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1233555551) 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, 488052 + ... + 490572.

It is an arithmetic number, because the mean of its divisors is an integer number (48769175).

Almost surely, 2^1233555552 is an apocalyptic number.

1233555552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1233555552 is an abundant number, since it is smaller than the sum of its proper divisors (2277825048).

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

1233555552 is a wasteful number, since it uses less digits than its factorization.

1233555552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4236 (or 4225 counting only the distinct ones).

The product of its digits is 112500, while the sum is 36.

The square root of 1233555552 is about 35122.0095097077. The cubic root of 1233555552 is about 1072.4726789787.

The spelling of 1233555552 in words is "one billion, two hundred thirty-three million, five hundred fifty-five thousand, five hundred fifty-two".