155002400 has 144 divisors (see below), whose sum is σ = 438721920. Its totient is φ = 52377600.

The previous prime is 155002391. The next prime is 155002409. The reversal of 155002400 is 4200551.

It is an interprime number because it is at equal distance from previous prime (155002391) and next prime (155002409).

It is not an unprimeable number, because it can be changed into a prime (155002409) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 498245 + ... + 498555.

It is an arithmetic number, because the mean of its divisors is an integer number (3046680).

Almost surely, 2^155002400 is an apocalyptic number.

155002400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155002400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (219360960).

155002400 is an abundant number, since it is smaller than the sum of its proper divisors (283719520).

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

155002400 is a wasteful number, since it uses less digits than its factorization.

155002400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 427 (or 414 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 17.

The square root of 155002400 is about 12449.9959839351. The cubic root of 155002400 is about 537.1713079629.

Adding to 155002400 its reverse (4200551), we get a palindrome (159202951).

The spelling of 155002400 in words is "one hundred fifty-five million, two thousand, four hundred".