155545450 has 24 divisors (see below), whose sum is σ = 292133088. Its totient is φ = 61612080.

The previous prime is 155545433. The next prime is 155545463. The reversal of 155545450 is 54545551.

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, 9952 + ... + 20251.

It is an arithmetic number, because the mean of its divisors is an integer number (12172212).

Almost surely, 2^155545450 is an apocalyptic number.

155545450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155545450 is a deficient number, since it is larger than the sum of its proper divisors (136587638).

155545450 is a wasteful number, since it uses less digits than its factorization.

155545450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30318 (or 30313 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 34.

The square root of 155545450 is about 12471.7861591674. The cubic root of 155545450 is about 537.7979022849.

The spelling of 155545450 in words is "one hundred fifty-five million, five hundred forty-five thousand, four hundred fifty".