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87745054 = 243872527
BaseRepresentation
bin1010011101011…
…10001000011110
320010002220120211
411032232020132
5134430320204
612412403034
72113551325
oct516561036
9203086524
1087745054
1145591181
122547647a
1315242767
14b9210bc
157a83804
hex53ae21e

87745054 has 4 divisors (see below), whose sum is σ = 131617584. Its totient is φ = 43872526.

The previous prime is 87745033. The next prime is 87745079. The reversal of 87745054 is 45054778.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 87744998 and 87745016.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21936262 + ... + 21936265.

It is an arithmetic number, because the mean of its divisors is an integer number (32904396).

Almost surely, 287745054 is an apocalyptic number.

87745054 is a deficient number, since it is larger than the sum of its proper divisors (43872530).

87745054 is a wasteful number, since it uses less digits than its factorization.

87745054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43872529.

The product of its (nonzero) digits is 156800, while the sum is 40.

The square root of 87745054 is about 9367.2329959279. The cubic root of 87745054 is about 444.3660610982.

The spelling of 87745054 in words is "eighty-seven million, seven hundred forty-five thousand, fifty-four".

Divisors: 1 2 43872527 87745054