47020155 has 128 divisors (see below), whose sum is σ = 102144000. Its totient is φ = 18289152.

The previous prime is 47020151. The next prime is 47020159. The reversal of 47020155 is 55102074.

47020155 = T₃₄₄ + T₃₄₅ + ... + T₆₈₅.

It is an interprime number because it is at equal distance from previous prime (47020151) and next prime (47020159).

It is not a de Polignac number, because 47020155 - 2² = 47020151 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47020151) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1270797 + ... + 1270833.

It is an arithmetic number, because the mean of its divisors is an integer number (798000).

Almost surely, 2^47020155 is an apocalyptic number.

47020155 is an abundant number, since it is smaller than the sum of its proper divisors (55123845).

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

47020155 is a wasteful number, since it uses less digits than its factorization.

47020155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98 (or 84 counting only the distinct ones).

The product of its (nonzero) digits is 1400, while the sum is 24.

The square root of 47020155 is about 6857.1243972966. The cubic root of 47020155 is about 360.9341863791.

The spelling of 47020155 in words is "forty-seven million, twenty thousand, one hundred fifty-five".