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457131245 = 5205344533
BaseRepresentation
bin11011001111110…
…100010011101101
31011212011200011212
4123033310103231
51414011144440
6113205524205
714220360104
oct3317642355
91155150155
10457131245
1121504751a
12109113665
137392587c
14449d703b
152a1eb465
hex1b3f44ed

457131245 has 8 divisors (see below), whose sum is σ = 548837016. Its totient is φ = 365518656.

The previous prime is 457131223. The next prime is 457131251. The reversal of 457131245 is 542131754.

It can be written as a sum of positive squares in 4 ways, for example, as 59567524 + 397563721 = 7718^2 + 19939^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 457131245 - 216 = 457065709 is a prime.

It is a super-3 number, since 3×4571312453 (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12002 + ... + 32531.

It is an arithmetic number, because the mean of its divisors is an integer number (68604627).

Almost surely, 2457131245 is an apocalyptic number.

It is an amenable number.

457131245 is a deficient number, since it is larger than the sum of its proper divisors (91705771).

457131245 is a wasteful number, since it uses less digits than its factorization.

457131245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46591.

The product of its digits is 16800, while the sum is 32.

The square root of 457131245 is about 21380.6277971438. The cubic root of 457131245 is about 770.3361915302.

Adding to 457131245 its reverse (542131754), we get a palindrome (999262999).

The spelling of 457131245 in words is "four hundred fifty-seven million, one hundred thirty-one thousand, two hundred forty-five".

Divisors: 1 5 2053 10265 44533 222665 91426249 457131245