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73211053 = 131558863
BaseRepresentation
bin1000101110100…
…01110010101101
312002202111200111
410113101302231
5122220223203
611133100021
71546166206
oct427216255
9162674614
1073211053
1138364603
1220627611
1312224266
149a1a5ad
15666226d
hex45d1cad

73211053 has 4 divisors (see below), whose sum is σ = 73770048. Its totient is φ = 72652060.

The previous prime is 73211023. The next prime is 73211077. The reversal of 73211053 is 35011237.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 35011237 = 251139487.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-73211053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73211003) 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, 279301 + ... + 279562.

It is an arithmetic number, because the mean of its divisors is an integer number (18442512).

Almost surely, 273211053 is an apocalyptic number.

It is an amenable number.

73211053 is a deficient number, since it is larger than the sum of its proper divisors (558995).

73211053 is a wasteful number, since it uses less digits than its factorization.

73211053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 558994.

The product of its (nonzero) digits is 630, while the sum is 22.

The square root of 73211053 is about 8556.3457737518. The cubic root of 73211053 is about 418.3363001788.

The spelling of 73211053 in words is "seventy-three million, two hundred eleven thousand, fifty-three".

Divisors: 1 131 558863 73211053