153440055 has 16 divisors (see below), whose sum is σ = 272782560. Its totient is φ = 81834624.

The previous prime is 153439997. The next prime is 153440059. The reversal of 153440055 is 550044351.

It is not a de Polignac number, because 153440055 - 2⁹ = 153439543 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (153440059) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 568162 + ... + 568431.

It is an arithmetic number, because the mean of its divisors is an integer number (17048910).

Almost surely, 2^153440055 is an apocalyptic number.

153440055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

153440055 is a deficient number, since it is larger than the sum of its proper divisors (119342505).

153440055 is a wasteful number, since it uses less digits than its factorization.

153440055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136607 (or 1136601 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 153440055 is about 12387.0922738147. The cubic root of 153440055 is about 535.3604058298.

The spelling of 153440055 in words is "one hundred fifty-three million, four hundred forty thousand, fifty-five".