47155480 has 16 divisors (see below), whose sum is σ = 106099920. Its totient is φ = 18862176.

The previous prime is 47155469. The next prime is 47155489. The reversal of 47155480 is 8455174.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47155489) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589404 + ... + 589483.

It is an arithmetic number, because the mean of its divisors is an integer number (6631245).

Almost surely, 2^47155480 is an apocalyptic number.

47155480 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47155480 is an abundant number, since it is smaller than the sum of its proper divisors (58944440).

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

47155480 is a wasteful number, since it uses less digits than its factorization.

47155480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1178898 (or 1178894 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 34.

The square root of 47155480 is about 6866.9847822753. The cubic root of 47155480 is about 361.2801134685.

The spelling of 47155480 in words is "forty-seven million, one hundred fifty-five thousand, four hundred eighty".