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75212061 = 328388589
BaseRepresentation
bin1000111101110…
…10010100011101
312020112011112220
410132322110131
5123223241221
611244015553
71602202101
oct436722435
9166464486
1075212061
1139500a31
12212315b9
1312774ca2
149dbb901
15690a0c6
hex47ba51d

75212061 has 8 divisors (see below), whose sum is σ = 100638240. Its totient is φ = 49963632.

The previous prime is 75212057. The next prime is 75212087. The reversal of 75212061 is 16021257.

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

It is not a de Polignac number, because 75212061 - 22 = 75212057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75212161) 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, 43446 + ... + 45143.

It is an arithmetic number, because the mean of its divisors is an integer number (12579780).

Almost surely, 275212061 is an apocalyptic number.

It is an amenable number.

75212061 is a deficient number, since it is larger than the sum of its proper divisors (25426179).

75212061 is a wasteful number, since it uses less digits than its factorization.

75212061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88875.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 75212061 is about 8672.4887431463. The cubic root of 75212061 is about 422.1134234623.

The spelling of 75212061 in words is "seventy-five million, two hundred twelve thousand, sixty-one".

Divisors: 1 3 283 849 88589 265767 25070687 75212061