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87703225 = 5218732
BaseRepresentation
bin1010011101000…
…11111010111001
320010000210012121
411032203322321
5134423000400
612411441241
72113315351
oct516437271
9203023177
1087703225
1145562805
1225456221
13152296cc
14b90db61
157a7621a
hex53a3eb9

87703225 has 9 divisors (see below), whose sum is σ = 108810093. Its totient is φ = 70125120.

The previous prime is 87703207. The next prime is 87703237. The reversal of 87703225 is 52230778.

The square root of 87703225 is 9365.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 41951529 + 45751696 = 6477^2 + 6764^2 .

It is not a de Polignac number, because 87703225 - 213 = 87695033 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 45889 + ... + 47761.

Almost surely, 287703225 is an apocalyptic number.

87703225 is the 9365-th square number.

87703225 is the 4683-rd centered octagonal number.

It is an amenable number.

87703225 is a deficient number, since it is larger than the sum of its proper divisors (21106868).

87703225 is an frugal number, since it uses more digits than its factorization.

87703225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3756 (or 1878 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The cubic root of 87703225 is about 444.2954385332.

The spelling of 87703225 in words is "eighty-seven million, seven hundred three thousand, two hundred twenty-five".

Divisors: 1 5 25 1873 9365 46825 3508129 17540645 87703225