1155355450 has 24 divisors (see below), whose sum is σ = 2151184860. Its totient is φ = 461664000.

The previous prime is 1155355423. The next prime is 1155355471. The reversal of 1155355450 is 545535511.

It can be written as a sum of positive squares in 6 ways, for example, as 676052001 + 479303449 = 26001^2 + 21893^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39000 + ... + 61900.

Almost surely, 2^1155355450 is an apocalyptic number.

1155355450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1155355450 is a deficient number, since it is larger than the sum of its proper divisors (995829410).

1155355450 is a wasteful number, since it uses less digits than its factorization.

1155355450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23922 (or 23917 counting only the distinct ones).

The product of its (nonzero) digits is 37500, while the sum is 34.

The square root of 1155355450 is about 33990.5200019064. The cubic root of 1155355450 is about 1049.3133681676.

The spelling of 1155355450 in words is "one billion, one hundred fifty-five million, three hundred fifty-five thousand, four hundred fifty".