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61146641 = 325318797
BaseRepresentation
bin1110100101000…
…0011000010001
311021001120102102
43221100120101
5111123143031
610022330145
71341511043
oct351203021
9137046372
1061146641
1131574416
1218589955
13c88bb5a
148199a93
15557c7cb
hex3a50611

61146641 has 4 divisors (see below), whose sum is σ = 61168692. Its totient is φ = 61124592.

The previous prime is 61146593. The next prime is 61146653. The reversal of 61146641 is 14664116.

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 57456400 + 3690241 = 7580^2 + 1921^2 .

It is a cyclic number.

It is not a de Polignac number, because 61146641 - 214 = 61130257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61146661) 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, 6146 + ... + 12651.

It is an arithmetic number, because the mean of its divisors is an integer number (15292173).

Almost surely, 261146641 is an apocalyptic number.

It is an amenable number.

61146641 is a deficient number, since it is larger than the sum of its proper divisors (22051).

61146641 is a wasteful number, since it uses less digits than its factorization.

61146641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22050.

The product of its digits is 3456, while the sum is 29.

The square root of 61146641 is about 7819.6317688239. The cubic root of 61146641 is about 393.9649040690.

The spelling of 61146641 in words is "sixty-one million, one hundred forty-six thousand, six hundred forty-one".

Divisors: 1 3253 18797 61146641