123451552 has 72 divisors (see below), whose sum is σ = 295221024. Its totient is φ = 49769472.

The previous prime is 123451487. The next prime is 123451553. The reversal of 123451552 is 255154321.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 123451552.

It is not an unprimeable number, because it can be changed into a prime (123451553) 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, 63783 + ... + 65689.

It is an arithmetic number, because the mean of its divisors is an integer number (4100292).

Almost surely, 2^123451552 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 123451552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147610512).

123451552 is an abundant number, since it is smaller than the sum of its proper divisors (171769472).

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

123451552 is a wasteful number, since it uses less digits than its factorization.

123451552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1958 (or 1933 counting only the distinct ones).

The product of its digits is 6000, while the sum is 28.

The square root of 123451552 is about 11110.8753930552. The cubic root of 123451552 is about 497.9268183836.

The spelling of 123451552 in words is "one hundred twenty-three million, four hundred fifty-one thousand, five hundred fifty-two".