Search a number
-
+
61025129 = 1147118037
BaseRepresentation
bin1110100011001…
…0101101101001
311020211101201222
43220302231221
5111110301004
610015551425
71340463554
oct350625551
9136741658
1061025129
11314a10a0
121852b575
13c848759
14816769b
1555567be
hex3a32b69

61025129 has 8 divisors (see below), whose sum is σ = 67989888. Its totient is φ = 54296560.

The previous prime is 61025119. The next prime is 61025183. The reversal of 61025129 is 92152016.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 61025129 - 224 = 44247913 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 61025098 and 61025107.

It is not an unprimeable number, because it can be changed into a prime (61025119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58502 + ... + 59535.

It is an arithmetic number, because the mean of its divisors is an integer number (8498736).

Almost surely, 261025129 is an apocalyptic number.

It is an amenable number.

61025129 is a deficient number, since it is larger than the sum of its proper divisors (6964759).

61025129 is a wasteful number, since it uses less digits than its factorization.

61025129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118095.

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 61025129 is about 7811.8582296404. The cubic root of 61025129 is about 393.7037656640.

The spelling of 61025129 in words is "sixty-one million, twenty-five thousand, one hundred twenty-nine".

Divisors: 1 11 47 517 118037 1298407 5547739 61025129