Search a number
-
+
47488025 = 5213146117
BaseRepresentation
bin1011010100100…
…1110000011001
310022100122022202
42311021300121
544124104100
64413455545
71114433024
oct265116031
9108318282
1047488025
1124895502
1213aa15b5
139ab8c30
1464421bb
1542807d5
hex2d49c19

47488025 has 12 divisors (see below), whose sum is σ = 63415212. Its totient is φ = 35067840.

The previous prime is 47488013. The next prime is 47488027. The reversal of 47488025 is 52088474.

It can be written as a sum of positive squares in 6 ways, for example, as 1098304 + 46389721 = 1048^2 + 6811^2 .

It is not a de Polignac number, because 47488025 - 24 = 47488009 is a prime.

It is a super-2 number, since 2×474880252 = 4510225036801250, which contains 22 as substring.

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 47488025.

It is not an unprimeable number, because it can be changed into a prime (47488027) 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, 72734 + ... + 73383.

It is an arithmetic number, because the mean of its divisors is an integer number (5284601).

Almost surely, 247488025 is an apocalyptic number.

It is an amenable number.

47488025 is a deficient number, since it is larger than the sum of its proper divisors (15927187).

47488025 is a wasteful number, since it uses less digits than its factorization.

47488025 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146140 (or 146135 counting only the distinct ones).

The product of its (nonzero) digits is 71680, while the sum is 38.

The square root of 47488025 is about 6891.1555634741. The cubic root of 47488025 is about 362.1273856499.

The spelling of 47488025 in words is "forty-seven million, four hundred eighty-eight thousand, twenty-five".

Divisors: 1 5 13 25 65 325 146117 730585 1899521 3652925 9497605 47488025