1153321554 has 64 divisors (see below), whose sum is σ = 2946004992. Its totient is φ = 292252800.

The previous prime is 1153321493. The next prime is 1153321573. The reversal of 1153321554 is 4551233511.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 11502 + ... + 49385.

It is an arithmetic number, because the mean of its divisors is an integer number (46031328).

Almost surely, 2^1153321554 is an apocalyptic number.

1153321554 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

1153321554 is an abundant number, since it is smaller than the sum of its proper divisors (1792683438).

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

1153321554 is a wasteful number, since it uses less digits than its factorization.

1153321554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60951.

The product of its digits is 9000, while the sum is 30.

The square root of 1153321554 is about 33960.5882457887. The cubic root of 1153321554 is about 1048.6972669096.

It can be divided in two parts, 115332 and 1554, that added together give a triangular number (116886 = T₄₈₃).

The spelling of 1153321554 in words is "one billion, one hundred fifty-three million, three hundred twenty-one thousand, five hundred fifty-four".