1154320552 has 64 divisors (see below), whose sum is σ = 2761228800. Its totient is φ = 439266240.

The previous prime is 1154320543. The next prime is 1154320571. The reversal of 1154320552 is 2550234511.

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 1154320552.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4699 + ... + 48277.

It is an arithmetic number, because the mean of its divisors is an integer number (43144200).

Almost surely, 2^1154320552 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 1154320552, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1380614400).

1154320552 is an abundant number, since it is smaller than the sum of its proper divisors (1606908248).

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

1154320552 is a wasteful number, since it uses less digits than its factorization.

1154320552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43646 (or 43642 counting only the distinct ones).

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

The square root of 1154320552 is about 33975.2932584842. The cubic root of 1154320552 is about 1048.9999706168. Note that the first 4 decimals are identical.

The spelling of 1154320552 in words is "one billion, one hundred fifty-four million, three hundred twenty thousand, five hundred fifty-two".