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49031457 = 3191934457
BaseRepresentation
bin1011101100001…
…0100100100001
310102021001111220
42323002210201
5100023001312
64510525253
71133521566
oct273024441
9112231456
1049031457
112574a072
1214506829
13a2095c7
14672486d
154487c8c
hex2ec2921

49031457 has 16 divisors (see below), whose sum is σ = 69188160. Its totient is φ = 30799872.

The previous prime is 49031453. The next prime is 49031459. The reversal of 49031457 is 75413094.

It is not a de Polignac number, because 49031457 - 22 = 49031453 is a prime.

It is not an unprimeable number, because it can be changed into a prime (49031453) 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 15 ways as a sum of consecutive naturals, for example, 8773 + ... + 13229.

It is an arithmetic number, because the mean of its divisors is an integer number (4324260).

Almost surely, 249031457 is an apocalyptic number.

It is an amenable number.

49031457 is a deficient number, since it is larger than the sum of its proper divisors (20156703).

49031457 is a wasteful number, since it uses less digits than its factorization.

49031457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4672.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 49031457 is about 7002.2465680666. The cubic root of 49031457 is about 366.0088609041.

The spelling of 49031457 in words is "forty-nine million, thirty-one thousand, four hundred fifty-seven".

Divisors: 1 3 19 57 193 579 3667 4457 11001 13371 84683 254049 860201 2580603 16343819 49031457