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67505053 = 711279699
BaseRepresentation
bin1000000011000…
…00101110011101
311201000121112011
410001200232131
5114240130203
610410511221
71446532510
oct401405635
9151017464
1067505053
1135117600
121a735511
1310ca7025
148d72d77
155dd676d
hex4060b9d

67505053 has 12 divisors (see below), whose sum is σ = 84800800. Its totient is φ = 52600680.

The previous prime is 67505051. The next prime is 67505059. The reversal of 67505053 is 35050576.

It is not a de Polignac number, because 67505053 - 21 = 67505051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67505051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 39003 + ... + 40696.

Almost surely, 267505053 is an apocalyptic number.

It is an amenable number.

67505053 is a deficient number, since it is larger than the sum of its proper divisors (17295747).

67505053 is a wasteful number, since it uses less digits than its factorization.

67505053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 79728 (or 79717 counting only the distinct ones).

The product of its (nonzero) digits is 15750, while the sum is 31.

The square root of 67505053 is about 8216.1458726096. The cubic root of 67505053 is about 407.1728022003.

The spelling of 67505053 in words is "sixty-seven million, five hundred five thousand, fifty-three".

Divisors: 1 7 11 77 121 847 79699 557893 876689 6136823 9643579 67505053