47155542 has 48 divisors (see below), whose sum is σ = 110808000. Its totient is φ = 13338192.

The previous prime is 47155529. The next prime is 47155553. The reversal of 47155542 is 24555174.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 30709 + ... + 32207.

It is an arithmetic number, because the mean of its divisors is an integer number (2308500).

Almost surely, 2^47155542 is an apocalyptic number.

47155542 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 47155542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55404000).

47155542 is an abundant number, since it is smaller than the sum of its proper divisors (63652458).

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

47155542 is a wasteful number, since it uses less digits than its factorization.

47155542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1625 (or 1618 counting only the distinct ones).

The product of its digits is 28000, while the sum is 33.

The square root of 47155542 is about 6866.9892966277. The cubic root of 47155542 is about 361.2802718054.

The spelling of 47155542 in words is "forty-seven million, one hundred fifty-five thousand, five hundred forty-two".