155435400 has 72 divisors (see below), whose sum is σ = 522009930. Its totient is φ = 41448960.

The previous prime is 155435383. The next prime is 155435443. The reversal of 155435400 is 4534551.

It can be written as a sum of positive squares in 3 ways, for example, as 145588356 + 9847044 = 12066^2 + 3138^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 41377 + ... + 44976.

Almost surely, 2^155435400 is an apocalyptic number.

155435400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155435400 is an abundant number, since it is smaller than the sum of its proper divisors (366574530).

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

155435400 is a wasteful number, since it uses less digits than its factorization.

155435400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86375 (or 86363 counting only the distinct ones).

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

The square root of 155435400 is about 12467.3734202518. The cubic root of 155435400 is about 537.6710398522.

Adding to 155435400 its reverse (4534551), we get a palindrome (159969951).

The spelling of 155435400 in words is "one hundred fifty-five million, four hundred thirty-five thousand, four hundred".