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61232401 = 80975689
BaseRepresentation
bin1110100110010…
…1010100010001
311021012221001201
43221211110101
5111133414101
610024231201
71342316056
oct351452421
9137187051
1061232401
113162289a
121860b501
13c8bbbb9
1481bd02d
155597e01
hex3a65511

61232401 has 4 divisors (see below), whose sum is σ = 61308900. Its totient is φ = 61155904.

The previous prime is 61232389. The next prime is 61232441. The reversal of 61232401 is 10423216.

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

It can be written as a sum of positive squares in 2 ways, for example, as 58675600 + 2556801 = 7660^2 + 1599^2 .

It is a cyclic number.

It is not a de Polignac number, because 61232401 - 27 = 61232273 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61232441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37036 + ... + 38653.

It is an arithmetic number, because the mean of its divisors is an integer number (15327225).

Almost surely, 261232401 is an apocalyptic number.

It is an amenable number.

61232401 is a deficient number, since it is larger than the sum of its proper divisors (76499).

61232401 is an equidigital number, since it uses as much as digits as its factorization.

61232401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76498.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 61232401 is about 7825.1134816052. The cubic root of 61232401 is about 394.1490005645.

Adding to 61232401 its reverse (10423216), we get a palindrome (71655617).

The spelling of 61232401 in words is "sixty-one million, two hundred thirty-two thousand, four hundred one".

Divisors: 1 809 75689 61232401