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1457499031 = 6432266717
BaseRepresentation
bin101011011011111…
…1010101110010111
310202120112121210121
41112313322232113
510441104432111
6400343132411
751055352212
oct12667725627
93676477717
101457499031
116887a165a
12348144107
131a2c61281
14db7dc779
1587e51871
hex56dfab97

1457499031 has 4 divisors (see below), whose sum is σ = 1459766392. Its totient is φ = 1455231672.

The previous prime is 1457498989. The next prime is 1457499041. The reversal of 1457499031 is 1309947541.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1309947541 = 7187135363.

It is a cyclic number.

It is not a de Polignac number, because 1457499031 - 221 = 1455401879 is a prime.

It is a super-2 number, since 2×14574990312 = 4248606850731877922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1457499041) 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, 1132716 + ... + 1134001.

It is an arithmetic number, because the mean of its divisors is an integer number (364941598).

Almost surely, 21457499031 is an apocalyptic number.

1457499031 is a deficient number, since it is larger than the sum of its proper divisors (2267361).

1457499031 is an equidigital number, since it uses as much as digits as its factorization.

1457499031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2267360.

The product of its (nonzero) digits is 136080, while the sum is 43.

The square root of 1457499031 is about 38177.2056468254. The cubic root of 1457499031 is about 1133.7990573141.

The spelling of 1457499031 in words is "one billion, four hundred fifty-seven million, four hundred ninety-nine thousand, thirty-one".

Divisors: 1 643 2266717 1457499031