Search a number
-
+
47945541 = 3715112
BaseRepresentation
bin1011011011100…
…1011101000101
310100012212220210
42312321131011
544233224131
64431350033
71121346630
oct266713505
9110185823
1047945541
1125078216
1214082319
139c19257
146520c17
154321146
hex2db9745

47945541 has 12 divisors (see below), whose sum is σ = 73108256. Its totient is φ = 27379320.

The previous prime is 47945539. The next prime is 47945543. The reversal of 47945541 is 14554974.

It is an interprime number because it is at equal distance from previous prime (47945539) and next prime (47945543).

It is not a de Polignac number, because 47945541 - 21 = 47945539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 47945541.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47945543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30976 + ... + 32486.

Almost surely, 247945541 is an apocalyptic number.

It is an amenable number.

47945541 is a deficient number, since it is larger than the sum of its proper divisors (25162715).

47945541 is an frugal number, since it uses more digits than its factorization.

47945541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3032 (or 1521 counting only the distinct ones).

The product of its digits is 100800, while the sum is 39.

The square root of 47945541 is about 6924.2718750783. The cubic root of 47945541 is about 363.2866240958.

The spelling of 47945541 in words is "forty-seven million, nine hundred forty-five thousand, five hundred forty-one".

Divisors: 1 3 7 21 1511 4533 10577 31731 2283121 6849363 15981847 47945541