155501450 has 24 divisors (see below), whose sum is σ = 311482668. Its totient is φ = 57415680.

The previous prime is 155501443. The next prime is 155501473. The reversal of 155501450 is 54105551.

It can be written as a sum of positive squares in 6 ways, for example, as 75881521 + 79619929 = 8711^2 + 8923^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 118967 + ... + 120266.

Almost surely, 2^155501450 is an apocalyptic number.

155501450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155501450 is an abundant number, since it is smaller than the sum of its proper divisors (155981218).

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

155501450 is a wasteful number, since it uses less digits than its factorization.

155501450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239258 (or 239253 counting only the distinct ones).

The product of its (nonzero) digits is 2500, while the sum is 26.

The square root of 155501450 is about 12470.0220529075. The cubic root of 155501450 is about 537.7471875489.

The spelling of 155501450 in words is "one hundred fifty-five million, five hundred one thousand, four hundred fifty".