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1139555 = 5292271
BaseRepresentation
bin100010110001101100011
32010220011202
410112031203
5242431210
640231415
712454214
oct4261543
92126152
101139555
1170918a
1246b56b
1330b8c1
1421940b
151779a5
hex116363

1139555 has 12 divisors (see below), whose sum is σ = 1421472. Its totient is φ = 876960.

The previous prime is 1139549. The next prime is 1139557. The reversal of 1139555 is 5559311.

It is a happy number.

It is not a de Polignac number, because 1139555 - 24 = 1139539 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1139557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4070 + ... + 4340.

It is an arithmetic number, because the mean of its divisors is an integer number (118456).

21139555 is an apocalyptic number.

1139555 is a deficient number, since it is larger than the sum of its proper divisors (281917).

1139555 is an equidigital number, since it uses as much as digits as its factorization.

1139555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 305 counting only the distinct ones).

The product of its digits is 3375, while the sum is 29.

The square root of 1139555 is about 1067.4994145197. The cubic root of 1139555 is about 104.4507983241.

It can be divided in two parts, 113 and 9555, that multiplied together give a triangular number (1079715 = T1469).

The spelling of 1139555 in words is "one million, one hundred thirty-nine thousand, five hundred fifty-five".

Divisors: 1 5 29 145 271 841 1355 4205 7859 39295 227911 1139555