Search a number
-
+
87054031 is a prime number
BaseRepresentation
bin1010011000001…
…01011011001111
320001210210200101
411030011123033
5134241212111
612345511531
72104642561
oct514053317
9201723611
1087054031
1145159a89
12251a25a7
131506007c
14b7c1331
157998bc1
hex53056cf

87054031 has 2 divisors, whose sum is σ = 87054032. Its totient is φ = 87054030.

The previous prime is 87054013. The next prime is 87054041. The reversal of 87054031 is 13045078.

Together with previous prime (87054013) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87054031 - 25 = 87053999 is a prime.

It is a super-2 number, since 2×870540312 = 15156808626697922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87054041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43527015 + 43527016.

It is an arithmetic number, because the mean of its divisors is an integer number (43527016).

Almost surely, 287054031 is an apocalyptic number.

87054031 is a deficient number, since it is larger than the sum of its proper divisors (1).

87054031 is an equidigital number, since it uses as much as digits as its factorization.

87054031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 87054031 is about 9330.2749691528. The cubic root of 87054031 is about 443.1964726632.

The spelling of 87054031 in words is "eighty-seven million, fifty-four thousand, thirty-one".