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57391401 = 3199251383
BaseRepresentation
bin1101101011101…
…1100100101001
310222222210012110
43122323210221
5104143011101
65410032533
71264550604
oct332734451
9128883173
1057391401
112a43a011
1217278749
13bb75812
14789d33b
155089cd6
hex36bb929

57391401 has 16 divisors (see below), whose sum is σ = 77414400. Its totient is φ = 37818000.

The previous prime is 57391393. The next prime is 57391459. The reversal of 57391401 is 10419375.

It can be divided in two parts, 5739 and 1401, that added together give a triangular number (7140 = T119).

It is not a de Polignac number, because 57391401 - 23 = 57391393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (57391471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149656 + ... + 150038.

It is an arithmetic number, because the mean of its divisors is an integer number (4838400).

Almost surely, 257391401 is an apocalyptic number.

It is an amenable number.

57391401 is a deficient number, since it is larger than the sum of its proper divisors (20022999).

57391401 is a wasteful number, since it uses less digits than its factorization.

57391401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 57391401 is about 7575.7112537372. The cubic root of 57391401 is about 385.7289859379.

The spelling of 57391401 in words is "fifty-seven million, three hundred ninety-one thousand, four hundred one".

Divisors: 1 3 199 251 383 597 753 1149 49949 76217 96133 149847 228651 288399 19130467 57391401