47213157 has 32 divisors (see below), whose sum is σ = 68544000. Its totient is φ = 28814400.

The previous prime is 47213143. The next prime is 47213171. The reversal of 47213157 is 75131274.

It is an interprime number because it is at equal distance from previous prime (47213143) and next prime (47213171).

It is not a de Polignac number, because 47213157 - 2¹⁰ = 47212133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47213357) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 339594 + ... + 339732.

It is an arithmetic number, because the mean of its divisors is an integer number (2142000).

Almost surely, 2^47213157 is an apocalyptic number.

It is an amenable number.

47213157 is a deficient number, since it is larger than the sum of its proper divisors (21330843).

47213157 is a wasteful number, since it uses less digits than its factorization.

47213157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321.

The product of its digits is 5880, while the sum is 30.

The square root of 47213157 is about 6871.1830859030. The cubic root of 47213157 is about 361.4273502494.

The spelling of 47213157 in words is "forty-seven million, two hundred thirteen thousand, one hundred fifty-seven".