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48408521 = 72987929
BaseRepresentation
bin1011100010101…
…0011111001001
310101002102000012
42320222133021
544343033041
64445321305
71125315500
oct270523711
9111072005
1048408521
1125364047
1214266235
13a04bbc5
146601837
1543b33eb
hex2e2a7c9

48408521 has 6 divisors (see below), whose sum is σ = 56312010. Its totient is φ = 41492976.

The previous prime is 48408499. The next prime is 48408527. The reversal of 48408521 is 12580484.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 43296400 + 5112121 = 6580^2 + 2261^2 .

It is not a de Polignac number, because 48408521 - 222 = 44214217 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (48408527) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 493916 + ... + 494013.

It is an arithmetic number, because the mean of its divisors is an integer number (9385335).

Almost surely, 248408521 is an apocalyptic number.

It is an amenable number.

48408521 is a deficient number, since it is larger than the sum of its proper divisors (7903489).

48408521 is an equidigital number, since it uses as much as digits as its factorization.

48408521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987943 (or 987936 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 32.

The square root of 48408521 is about 6957.6232292357. The cubic root of 48408521 is about 364.4522239324.

The spelling of 48408521 in words is "forty-eight million, four hundred eight thousand, five hundred twenty-one".

Divisors: 1 7 49 987929 6915503 48408521