155471400 has 288 divisors, whose sum is σ = 620168640. Its totient is φ = 35458560.

The previous prime is 155471383. The next prime is 155471401. The reversal of 155471400 is 4174551.

It is a happy number.

155471400 is a `hidden beast` number, since 1 + 554 + 71 + 40 + 0 = 666.

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 (155471401) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 339972 + ... + 340428.

Almost surely, 2^155471400 is an apocalyptic number.

155471400 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 155471400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310084320).

155471400 is an abundant number, since it is smaller than the sum of its proper divisors (464697240).

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

155471400 is a wasteful number, since it uses less digits than its factorization.

155471400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 474 counting only the distinct ones).

The product of its (nonzero) digits is 2800, while the sum is 27.

The square root of 155471400 is about 12468.8171050826. The cubic root of 155471400 is about 537.7125461914.

The spelling of 155471400 in words is "one hundred fifty-five million, four hundred seventy-one thousand, four hundred".