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61012495 = 531393629
BaseRepresentation
bin1110100010111…
…1101000001111
311020210202102001
43220233220033
5111104344440
610015413131
71340411665
oct350575017
9136722361
1061012495
1131492655
12185241a7
13c842a8b
148162c35
155552b9a
hex3a2fa0f

61012495 has 8 divisors (see below), whose sum is σ = 75576960. Its totient is φ = 47235360.

The previous prime is 61012489. The next prime is 61012499. The reversal of 61012495 is 59421016.

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

It is a de Polignac number, because none of the positive numbers 2k-61012495 is a prime.

It is a super-2 number, since 2×610124952 = 7445049092250050, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61012499) 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, 196660 + ... + 196969.

It is an arithmetic number, because the mean of its divisors is an integer number (9447120).

Almost surely, 261012495 is an apocalyptic number.

61012495 is a deficient number, since it is larger than the sum of its proper divisors (14564465).

61012495 is a wasteful number, since it uses less digits than its factorization.

61012495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393665.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 61012495 is about 7811.0495453556. The cubic root of 61012495 is about 393.6765943617.

The spelling of 61012495 in words is "sixty-one million, twelve thousand, four hundred ninety-five".

Divisors: 1 5 31 155 393629 1968145 12202499 61012495