Search a number
-
+
57542651923 = 204792809837
BaseRepresentation
bin110101100101110011…
…110011000000010011
312111112020122120220111
4311211303303000103
51420321404330143
642233522422151
74104650320411
oct654563630023
9174466576814
1057542651923
1122449366089
12b19ab01957
135570612683
142adc3862b1
15176bb4e99d
hexd65cf3013

57542651923 has 4 divisors (see below), whose sum is σ = 57545482240. Its totient is φ = 57539821608.

The previous prime is 57542651899. The next prime is 57542651953. The reversal of 57542651923 is 32915624575.

57542651923 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 57542651923 - 229 = 57005781011 is a prime.

It is a super-2 number, since 2×575426519232 (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57542651953) 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, 1384440 + ... + 1425397.

It is an arithmetic number, because the mean of its divisors is an integer number (14386370560).

Almost surely, 257542651923 is an apocalyptic number.

57542651923 is a deficient number, since it is larger than the sum of its proper divisors (2830317).

57542651923 is a wasteful number, since it uses less digits than its factorization.

57542651923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2830316.

The product of its digits is 2268000, while the sum is 49.

The spelling of 57542651923 in words is "fifty-seven billion, five hundred forty-two million, six hundred fifty-one thousand, nine hundred twenty-three".

Divisors: 1 20479 2809837 57542651923