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55051554 = 2371129229
BaseRepresentation
bin1101001000000…
…0010100100010
310211120220112110
43102000110202
5103043122204
65243540150
71235634105
oct322002442
9124526473
1055051554
1129091058
121652a656
13b5367ac
14745073c
154c76889
hex3480522

55051554 has 16 divisors (see below), whose sum is σ = 111654720. Its totient is φ = 18091920.

The previous prime is 55051537. The next prime is 55051583. The reversal of 55051554 is 45515055.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64189 + ... + 65040.

It is an arithmetic number, because the mean of its divisors is an integer number (6978420).

Almost surely, 255051554 is an apocalyptic number.

55051554 is an abundant number, since it is smaller than the sum of its proper divisors (56603166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55051554 is a wasteful number, since it uses less digits than its factorization.

55051554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129305.

The product of its (nonzero) digits is 12500, while the sum is 30.

The square root of 55051554 is about 7419.6734429488. The cubic root of 55051554 is about 380.4140316429.

The spelling of 55051554 in words is "fifty-five million, fifty-one thousand, five hundred fifty-four".

Divisors: 1 2 3 6 71 142 213 426 129229 258458 387687 775374 9175259 18350518 27525777 55051554